Home / 1,040.16-1,559.12-519.13

Finding the Fourth Proportional to 1,040.16, 1,559.12 and 519.13

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Solution

The fourth proportional to 1,040.16, 1,559.12 and 519.13 is: 778.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.16 : 1,559.12 = 519.13 : x
  2. Step 2: Convert to fraction form
    1,040.16/1,559.12 = 519.13/x
  3. Step 3: Cross multiply
    1,040.16x = 1,559.12 × 519.13
  4. Step 4: Simplify right side
    1,040.16x = 809,385.97
  5. Step 5: Solve for x
    x = 809,385.97/1,040.16
  6. Step 6: Final answer
    x = 778.14

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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.