Home / 5,581.46-8,371.28-1,631.78

Finding the Fourth Proportional to 5,581.46, 8,371.28 and 1,631.78

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Solution

The fourth proportional to 5,581.46, 8,371.28 and 1,631.78 is: 2,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.46 : 8,371.28 = 1,631.78 : x
  2. Step 2: Convert to fraction form
    5,581.46/8,371.28 = 1,631.78/x
  3. Step 3: Cross multiply
    5,581.46x = 8,371.28 × 1,631.78
  4. Step 4: Simplify right side
    5,581.46x = 13,660,071.71
  5. Step 5: Solve for x
    x = 13,660,071.71/5,581.46
  6. Step 6: Final answer
    x = 2,447.40

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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.