Home / 1,447.60-2,171.49-581.91

Finding the Fourth Proportional to 1,447.60, 2,171.49 and 581.91

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Solution

The fourth proportional to 1,447.60, 2,171.49 and 581.91 is: 872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.60 : 2,171.49 = 581.91 : x
  2. Step 2: Convert to fraction form
    1,447.60/2,171.49 = 581.91/x
  3. Step 3: Cross multiply
    1,447.60x = 2,171.49 × 581.91
  4. Step 4: Simplify right side
    1,447.60x = 1,263,611.75
  5. Step 5: Solve for x
    x = 1,263,611.75/1,447.60
  6. Step 6: Final answer
    x = 872.90

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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.