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Finding the Fourth Proportional to 8,654.58, 11,939.15 and 5,669.10

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Solution

The fourth proportional to 8,654.58, 11,939.15 and 5,669.10 is: 7,820.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.58 : 11,939.15 = 5,669.10 : x
  2. Step 2: Convert to fraction form
    8,654.58/11,939.15 = 5,669.10/x
  3. Step 3: Cross multiply
    8,654.58x = 11,939.15 × 5,669.10
  4. Step 4: Simplify right side
    8,654.58x = 67,684,206.92
  5. Step 5: Solve for x
    x = 67,684,206.92/8,654.58
  6. Step 6: Final answer
    x = 7,820.62

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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.