Home / 8,911.72-12,294.28-5,372.92

Finding the Fourth Proportional to 8,911.72, 12,294.28 and 5,372.92

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Solution

The fourth proportional to 8,911.72, 12,294.28 and 5,372.92 is: 7,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.72 : 12,294.28 = 5,372.92 : x
  2. Step 2: Convert to fraction form
    8,911.72/12,294.28 = 5,372.92/x
  3. Step 3: Cross multiply
    8,911.72x = 12,294.28 × 5,372.92
  4. Step 4: Simplify right side
    8,911.72x = 66,056,182.90
  5. Step 5: Solve for x
    x = 66,056,182.90/8,911.72
  6. Step 6: Final answer
    x = 7,412.28

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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.