Home / 5,656.61-7,806.58-3,139.52

Finding the Fourth Proportional to 5,656.61, 7,806.58 and 3,139.52

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Solution

The fourth proportional to 5,656.61, 7,806.58 and 3,139.52 is: 4,332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.61 : 7,806.58 = 3,139.52 : x
  2. Step 2: Convert to fraction form
    5,656.61/7,806.58 = 3,139.52/x
  3. Step 3: Cross multiply
    5,656.61x = 7,806.58 × 3,139.52
  4. Step 4: Simplify right side
    5,656.61x = 24,508,867.16
  5. Step 5: Solve for x
    x = 24,508,867.16/5,656.61
  6. Step 6: Final answer
    x = 4,332.78

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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.