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Finding the Fourth Proportional to 3,082.47, 4,624.32 and 891.23

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Solution

The fourth proportional to 3,082.47, 4,624.32 and 891.23 is: 1,337.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.47 : 4,624.32 = 891.23 : x
  2. Step 2: Convert to fraction form
    3,082.47/4,624.32 = 891.23/x
  3. Step 3: Cross multiply
    3,082.47x = 4,624.32 × 891.23
  4. Step 4: Simplify right side
    3,082.47x = 4,121,309.59
  5. Step 5: Solve for x
    x = 4,121,309.59/3,082.47
  6. Step 6: Final answer
    x = 1,337.02

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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.