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Finding the Fourth Proportional to 2,641.95, 3,962.93 and 694.13

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Solution

The fourth proportional to 2,641.95, 3,962.93 and 694.13 is: 1,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.95 : 3,962.93 = 694.13 : x
  2. Step 2: Convert to fraction form
    2,641.95/3,962.93 = 694.13/x
  3. Step 3: Cross multiply
    2,641.95x = 3,962.93 × 694.13
  4. Step 4: Simplify right side
    2,641.95x = 2,750,765.32
  5. Step 5: Solve for x
    x = 2,750,765.32/2,641.95
  6. Step 6: Final answer
    x = 1,041.19

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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.