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Finding the Fourth Proportional to 8,890, 13,332.48 and 3,689.44

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Solution

The fourth proportional to 8,890, 13,332.48 and 3,689.44 is: 5,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890 : 13,332.48 = 3,689.44 : x
  2. Step 2: Convert to fraction form
    8,890/13,332.48 = 3,689.44/x
  3. Step 3: Cross multiply
    8,890x = 13,332.48 × 3,689.44
  4. Step 4: Simplify right side
    8,890x = 49,189,385.01
  5. Step 5: Solve for x
    x = 49,189,385.01/8,890
  6. Step 6: Final answer
    x = 5,533.11

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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.