Home / 9,369.60-12,929.94-5,177.76

Finding the Fourth Proportional to 9,369.60, 12,929.94 and 5,177.76

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Solution

The fourth proportional to 9,369.60, 12,929.94 and 5,177.76 is: 7,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.60 : 12,929.94 = 5,177.76 : x
  2. Step 2: Convert to fraction form
    9,369.60/12,929.94 = 5,177.76/x
  3. Step 3: Cross multiply
    9,369.60x = 12,929.94 × 5,177.76
  4. Step 4: Simplify right side
    9,369.60x = 66,948,126.13
  5. Step 5: Solve for x
    x = 66,948,126.13/9,369.60
  6. Step 6: Final answer
    x = 7,145.25

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1.5x scale

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.