Home / 8,675.12-11,972.05-5,487.28

Finding the Fourth Proportional to 8,675.12, 11,972.05 and 5,487.28

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Solution

The fourth proportional to 8,675.12, 11,972.05 and 5,487.28 is: 7,572.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675.12 : 11,972.05 = 5,487.28 : x
  2. Step 2: Convert to fraction form
    8,675.12/11,972.05 = 5,487.28/x
  3. Step 3: Cross multiply
    8,675.12x = 11,972.05 × 5,487.28
  4. Step 4: Simplify right side
    8,675.12x = 65,693,946.88
  5. Step 5: Solve for x
    x = 65,693,946.88/8,675.12
  6. Step 6: Final answer
    x = 7,572.68

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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.