Home / 1,618.61-2,428.08-1,531.13

Finding the Fourth Proportional to 1,618.61, 2,428.08 and 1,531.13

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Solution

The fourth proportional to 1,618.61, 2,428.08 and 1,531.13 is: 2,296.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.61 : 2,428.08 = 1,531.13 : x
  2. Step 2: Convert to fraction form
    1,618.61/2,428.08 = 1,531.13/x
  3. Step 3: Cross multiply
    1,618.61x = 2,428.08 × 1,531.13
  4. Step 4: Simplify right side
    1,618.61x = 3,717,706.13
  5. Step 5: Solve for x
    x = 3,717,706.13/1,618.61
  6. Step 6: Final answer
    x = 2,296.85

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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.