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Finding the Fourth Proportional to 8,507.40, 12,761.10 and 6,174.60

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Solution

The fourth proportional to 8,507.40, 12,761.10 and 6,174.60 is: 9,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.40 : 12,761.10 = 6,174.60 : x
  2. Step 2: Convert to fraction form
    8,507.40/12,761.10 = 6,174.60/x
  3. Step 3: Cross multiply
    8,507.40x = 12,761.10 × 6,174.60
  4. Step 4: Simplify right side
    8,507.40x = 78,794,688.06
  5. Step 5: Solve for x
    x = 78,794,688.06/8,507.40
  6. Step 6: Final answer
    x = 9,261.90

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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.