Home / 1,447.46-2,171.10-581.15

Finding the Fourth Proportional to 1,447.46, 2,171.10 and 581.15

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Solution

The fourth proportional to 1,447.46, 2,171.10 and 581.15 is: 871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.46 : 2,171.10 = 581.15 : x
  2. Step 2: Convert to fraction form
    1,447.46/2,171.10 = 581.15/x
  3. Step 3: Cross multiply
    1,447.46x = 2,171.10 × 581.15
  4. Step 4: Simplify right side
    1,447.46x = 1,261,734.77
  5. Step 5: Solve for x
    x = 1,261,734.77/1,447.46
  6. Step 6: Final answer
    x = 871.69

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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.