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Finding the Fourth Proportional to 2,454.48, 3,681.36 and 811.08

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Solution

The fourth proportional to 2,454.48, 3,681.36 and 811.08 is: 1,216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.48 : 3,681.36 = 811.08 : x
  2. Step 2: Convert to fraction form
    2,454.48/3,681.36 = 811.08/x
  3. Step 3: Cross multiply
    2,454.48x = 3,681.36 × 811.08
  4. Step 4: Simplify right side
    2,454.48x = 2,985,877.47
  5. Step 5: Solve for x
    x = 2,985,877.47/2,454.48
  6. Step 6: Final answer
    x = 1,216.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,455.48, 3,682.86 and 812.08
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.