Home / 8,972.44-13,458.66-3,128.90

Finding the Fourth Proportional to 8,972.44, 13,458.66 and 3,128.90

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Solution

The fourth proportional to 8,972.44, 13,458.66 and 3,128.90 is: 4,693.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.44 : 13,458.66 = 3,128.90 : x
  2. Step 2: Convert to fraction form
    8,972.44/13,458.66 = 3,128.90/x
  3. Step 3: Cross multiply
    8,972.44x = 13,458.66 × 3,128.90
  4. Step 4: Simplify right side
    8,972.44x = 42,110,801.27
  5. Step 5: Solve for x
    x = 42,110,801.27/8,972.44
  6. Step 6: Final answer
    x = 4,693.35

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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.