Home / 1,265.18-1,740.87-1,227.15

Finding the Fourth Proportional to 1,265.18, 1,740.87 and 1,227.15

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Solution

The fourth proportional to 1,265.18, 1,740.87 and 1,227.15 is: 1,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.18 : 1,740.87 = 1,227.15 : x
  2. Step 2: Convert to fraction form
    1,265.18/1,740.87 = 1,227.15/x
  3. Step 3: Cross multiply
    1,265.18x = 1,740.87 × 1,227.15
  4. Step 4: Simplify right side
    1,265.18x = 2,136,308.62
  5. Step 5: Solve for x
    x = 2,136,308.62/1,265.18
  6. Step 6: Final answer
    x = 1,688.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.