Home / 1,340.02-2,008.50-517.87

Finding the Fourth Proportional to 1,340.02, 2,008.50 and 517.87

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Solution

The fourth proportional to 1,340.02, 2,008.50 and 517.87 is: 776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.02 : 2,008.50 = 517.87 : x
  2. Step 2: Convert to fraction form
    1,340.02/2,008.50 = 517.87/x
  3. Step 3: Cross multiply
    1,340.02x = 2,008.50 × 517.87
  4. Step 4: Simplify right side
    1,340.02x = 1,040,141.90
  5. Step 5: Solve for x
    x = 1,040,141.90/1,340.02
  6. Step 6: Final answer
    x = 776.21

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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.