Home / 1,581.41-2,372.58-485.88

Finding the Fourth Proportional to 1,581.41, 2,372.58 and 485.88

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Solution

The fourth proportional to 1,581.41, 2,372.58 and 485.88 is: 728.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.41 : 2,372.58 = 485.88 : x
  2. Step 2: Convert to fraction form
    1,581.41/2,372.58 = 485.88/x
  3. Step 3: Cross multiply
    1,581.41x = 2,372.58 × 485.88
  4. Step 4: Simplify right side
    1,581.41x = 1,152,789.17
  5. Step 5: Solve for x
    x = 1,152,789.17/1,581.41
  6. Step 6: Final answer
    x = 728.97

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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.