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Finding the Fourth Proportional to 2,318.79, 3,478.19 and 587.41

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Solution

The fourth proportional to 2,318.79, 3,478.19 and 587.41 is: 881.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.79 : 3,478.19 = 587.41 : x
  2. Step 2: Convert to fraction form
    2,318.79/3,478.19 = 587.41/x
  3. Step 3: Cross multiply
    2,318.79x = 3,478.19 × 587.41
  4. Step 4: Simplify right side
    2,318.79x = 2,043,123.59
  5. Step 5: Solve for x
    x = 2,043,123.59/2,318.79
  6. Step 6: Final answer
    x = 881.12

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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.