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Finding the Fourth Proportional to 8,500.52, 11,705.64 and 7,168.88

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Solution

The fourth proportional to 8,500.52, 11,705.64 and 7,168.88 is: 9,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.52 : 11,705.64 = 7,168.88 : x
  2. Step 2: Convert to fraction form
    8,500.52/11,705.64 = 7,168.88/x
  3. Step 3: Cross multiply
    8,500.52x = 11,705.64 × 7,168.88
  4. Step 4: Simplify right side
    8,500.52x = 83,916,328.48
  5. Step 5: Solve for x
    x = 83,916,328.48/8,500.52
  6. Step 6: Final answer
    x = 9,871.91

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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.