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Finding the Fourth Proportional to 2,318.71, 3,478.06 and 587.47

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Solution

The fourth proportional to 2,318.71, 3,478.06 and 587.47 is: 881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.71 : 3,478.06 = 587.47 : x
  2. Step 2: Convert to fraction form
    2,318.71/3,478.06 = 587.47/x
  3. Step 3: Cross multiply
    2,318.71x = 3,478.06 × 587.47
  4. Step 4: Simplify right side
    2,318.71x = 2,043,238.52
  5. Step 5: Solve for x
    x = 2,043,238.52/2,318.71
  6. Step 6: Final answer
    x = 881.20

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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.