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Finding the Fourth Proportional to 7,192.32, 9,926.16 and 4,209.12

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Solution

The fourth proportional to 7,192.32, 9,926.16 and 4,209.12 is: 5,809.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.32 : 9,926.16 = 4,209.12 : x
  2. Step 2: Convert to fraction form
    7,192.32/9,926.16 = 4,209.12/x
  3. Step 3: Cross multiply
    7,192.32x = 9,926.16 × 4,209.12
  4. Step 4: Simplify right side
    7,192.32x = 41,780,398.58
  5. Step 5: Solve for x
    x = 41,780,398.58/7,192.32
  6. Step 6: Final answer
    x = 5,809.03

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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.