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Finding the Fourth Proportional to 8,987.56, 12,383.12 and 6,709.24

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Solution

The fourth proportional to 8,987.56, 12,383.12 and 6,709.24 is: 9,244.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.56 : 12,383.12 = 6,709.24 : x
  2. Step 2: Convert to fraction form
    8,987.56/12,383.12 = 6,709.24/x
  3. Step 3: Cross multiply
    8,987.56x = 12,383.12 × 6,709.24
  4. Step 4: Simplify right side
    8,987.56x = 83,081,324.03
  5. Step 5: Solve for x
    x = 83,081,324.03/8,987.56
  6. Step 6: Final answer
    x = 9,244.04

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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.