Home / 1,587.77-2,382.15-766.13

Finding the Fourth Proportional to 1,587.77, 2,382.15 and 766.13

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Solution

The fourth proportional to 1,587.77, 2,382.15 and 766.13 is: 1,149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.77 : 2,382.15 = 766.13 : x
  2. Step 2: Convert to fraction form
    1,587.77/2,382.15 = 766.13/x
  3. Step 3: Cross multiply
    1,587.77x = 2,382.15 × 766.13
  4. Step 4: Simplify right side
    1,587.77x = 1,825,024.67
  5. Step 5: Solve for x
    x = 1,825,024.67/1,587.77
  6. Step 6: Final answer
    x = 1,149.43

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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.