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Finding the Fourth Proportional to 3,079.33, 4,617.91 and 887.47

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Solution

The fourth proportional to 3,079.33, 4,617.91 and 887.47 is: 1,330.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.33 : 4,617.91 = 887.47 : x
  2. Step 2: Convert to fraction form
    3,079.33/4,617.91 = 887.47/x
  3. Step 3: Cross multiply
    3,079.33x = 4,617.91 × 887.47
  4. Step 4: Simplify right side
    3,079.33x = 4,098,256.59
  5. Step 5: Solve for x
    x = 4,098,256.59/3,079.33
  6. Step 6: Final answer
    x = 1,330.89

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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.