Home / 8,921.52-13,390.38-4,765.05

Finding the Fourth Proportional to 8,921.52, 13,390.38 and 4,765.05

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Solution

The fourth proportional to 8,921.52, 13,390.38 and 4,765.05 is: 7,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.52 : 13,390.38 = 4,765.05 : x
  2. Step 2: Convert to fraction form
    8,921.52/13,390.38 = 4,765.05/x
  3. Step 3: Cross multiply
    8,921.52x = 13,390.38 × 4,765.05
  4. Step 4: Simplify right side
    8,921.52x = 63,805,830.22
  5. Step 5: Solve for x
    x = 63,805,830.22/8,921.52
  6. Step 6: Final answer
    x = 7,151.90

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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.