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Finding the Fourth Proportional to 9,077.96, 12,540.18 and 7,008.20

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Solution

The fourth proportional to 9,077.96, 12,540.18 and 7,008.20 is: 9,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,077.96 : 12,540.18 = 7,008.20 : x
  2. Step 2: Convert to fraction form
    9,077.96/12,540.18 = 7,008.20/x
  3. Step 3: Cross multiply
    9,077.96x = 12,540.18 × 7,008.20
  4. Step 4: Simplify right side
    9,077.96x = 87,884,089.48
  5. Step 5: Solve for x
    x = 87,884,089.48/9,077.96
  6. Step 6: Final answer
    x = 9,681.04

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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.