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Finding the Fourth Proportional to 2,484.28, 3,724.11 and 839.68

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Solution

The fourth proportional to 2,484.28, 3,724.11 and 839.68 is: 1,258.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,484.28 : 3,724.11 = 839.68 : x
  2. Step 2: Convert to fraction form
    2,484.28/3,724.11 = 839.68/x
  3. Step 3: Cross multiply
    2,484.28x = 3,724.11 × 839.68
  4. Step 4: Simplify right side
    2,484.28x = 3,127,060.68
  5. Step 5: Solve for x
    x = 3,127,060.68/2,484.28
  6. Step 6: Final answer
    x = 1,258.74

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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.