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Finding the Fourth Proportional to 8,101.79, 12,154.20 and 5,579.53

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Solution

The fourth proportional to 8,101.79, 12,154.20 and 5,579.53 is: 8,370.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,101.79 : 12,154.20 = 5,579.53 : x
  2. Step 2: Convert to fraction form
    8,101.79/12,154.20 = 5,579.53/x
  3. Step 3: Cross multiply
    8,101.79x = 12,154.20 × 5,579.53
  4. Step 4: Simplify right side
    8,101.79x = 67,814,687.77
  5. Step 5: Solve for x
    x = 67,814,687.77/8,101.79
  6. Step 6: Final answer
    x = 8,370.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.