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Finding the Fourth Proportional to 7,425.15, 11,153.10 and 7,176.03

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Solution

The fourth proportional to 7,425.15, 11,153.10 and 7,176.03 is: 10,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.15 : 11,153.10 = 7,176.03 : x
  2. Step 2: Convert to fraction form
    7,425.15/11,153.10 = 7,176.03/x
  3. Step 3: Cross multiply
    7,425.15x = 11,153.10 × 7,176.03
  4. Step 4: Simplify right side
    7,425.15x = 80,034,980.19
  5. Step 5: Solve for x
    x = 80,034,980.19/7,425.15
  6. Step 6: Final answer
    x = 10,778.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.