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Finding the Fourth Proportional to 8,707.56, 12,023.28 and 5,351.88

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Solution

The fourth proportional to 8,707.56, 12,023.28 and 5,351.88 is: 7,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.56 : 12,023.28 = 5,351.88 : x
  2. Step 2: Convert to fraction form
    8,707.56/12,023.28 = 5,351.88/x
  3. Step 3: Cross multiply
    8,707.56x = 12,023.28 × 5,351.88
  4. Step 4: Simplify right side
    8,707.56x = 64,347,151.77
  5. Step 5: Solve for x
    x = 64,347,151.77/8,707.56
  6. Step 6: Final answer
    x = 7,389.80

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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.