Home / 8,877.72-12,247.38-5,338.90

Finding the Fourth Proportional to 8,877.72, 12,247.38 and 5,338.90

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Solution

The fourth proportional to 8,877.72, 12,247.38 and 5,338.90 is: 7,365.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,877.72 : 12,247.38 = 5,338.90 : x
  2. Step 2: Convert to fraction form
    8,877.72/12,247.38 = 5,338.90/x
  3. Step 3: Cross multiply
    8,877.72x = 12,247.38 × 5,338.90
  4. Step 4: Simplify right side
    8,877.72x = 65,387,537.08
  5. Step 5: Solve for x
    x = 65,387,537.08/8,877.72
  6. Step 6: Final answer
    x = 7,365.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.