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Finding the Fourth Proportional to 8,500.38, 12,750.60 and 7,405.56

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Solution

The fourth proportional to 8,500.38, 12,750.60 and 7,405.56 is: 11,108.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.38 : 12,750.60 = 7,405.56 : x
  2. Step 2: Convert to fraction form
    8,500.38/12,750.60 = 7,405.56/x
  3. Step 3: Cross multiply
    8,500.38x = 12,750.60 × 7,405.56
  4. Step 4: Simplify right side
    8,500.38x = 94,425,333.34
  5. Step 5: Solve for x
    x = 94,425,333.34/8,500.38
  6. Step 6: Final answer
    x = 11,108.37

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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.