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Finding the Fourth Proportional to 8,507.69, 12,765.02 and 3,761.34

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Solution

The fourth proportional to 8,507.69, 12,765.02 and 3,761.34 is: 5,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.69 : 12,765.02 = 3,761.34 : x
  2. Step 2: Convert to fraction form
    8,507.69/12,765.02 = 3,761.34/x
  3. Step 3: Cross multiply
    8,507.69x = 12,765.02 × 3,761.34
  4. Step 4: Simplify right side
    8,507.69x = 48,013,580.33
  5. Step 5: Solve for x
    x = 48,013,580.33/8,507.69
  6. Step 6: Final answer
    x = 5,643.55

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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.