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Finding the Fourth Proportional to 3,559.92, 5,339.40 and 962.64

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Solution

The fourth proportional to 3,559.92, 5,339.40 and 962.64 is: 1,443.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.92 : 5,339.40 = 962.64 : x
  2. Step 2: Convert to fraction form
    3,559.92/5,339.40 = 962.64/x
  3. Step 3: Cross multiply
    3,559.92x = 5,339.40 × 962.64
  4. Step 4: Simplify right side
    3,559.92x = 5,139,920.02
  5. Step 5: Solve for x
    x = 5,139,920.02/3,559.92
  6. Step 6: Final answer
    x = 1,443.83

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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.