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Finding the Fourth Proportional to 7,135.32, 9,824.38 and 6,479.22

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Solution

The fourth proportional to 7,135.32, 9,824.38 and 6,479.22 is: 8,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.32 : 9,824.38 = 6,479.22 : x
  2. Step 2: Convert to fraction form
    7,135.32/9,824.38 = 6,479.22/x
  3. Step 3: Cross multiply
    7,135.32x = 9,824.38 × 6,479.22
  4. Step 4: Simplify right side
    7,135.32x = 63,654,319.38
  5. Step 5: Solve for x
    x = 63,654,319.38/7,135.32
  6. Step 6: Final answer
    x = 8,921.02

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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.