Home / 5,124.53-7,686.77-1,426.78

Finding the Fourth Proportional to 5,124.53, 7,686.77 and 1,426.78

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Solution

The fourth proportional to 5,124.53, 7,686.77 and 1,426.78 is: 2,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.53 : 7,686.77 = 1,426.78 : x
  2. Step 2: Convert to fraction form
    5,124.53/7,686.77 = 1,426.78/x
  3. Step 3: Cross multiply
    5,124.53x = 7,686.77 × 1,426.78
  4. Step 4: Simplify right side
    5,124.53x = 10,967,332.18
  5. Step 5: Solve for x
    x = 10,967,332.18/5,124.53
  6. Step 6: Final answer
    x = 2,140.16

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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.