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Finding the Fourth Proportional to 2,641.67, 3,962.54 and 998.99

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Solution

The fourth proportional to 2,641.67, 3,962.54 and 998.99 is: 1,498.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.67 : 3,962.54 = 998.99 : x
  2. Step 2: Convert to fraction form
    2,641.67/3,962.54 = 998.99/x
  3. Step 3: Cross multiply
    2,641.67x = 3,962.54 × 998.99
  4. Step 4: Simplify right side
    2,641.67x = 3,958,537.83
  5. Step 5: Solve for x
    x = 3,958,537.83/2,641.67
  6. Step 6: Final answer
    x = 1,498.50

Related Problems

Find fourth proportional to 1,320.84, 1,981.27 and 499.50
Half scale
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Double scale
Find fourth proportional to 2,642.67, 3,964.04 and 999.99
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.