Home / 7,458.62-11,191.17-6,638.90

Finding the Fourth Proportional to 7,458.62, 11,191.17 and 6,638.90

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Solution

The fourth proportional to 7,458.62, 11,191.17 and 6,638.90 is: 9,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,458.62 : 11,191.17 = 6,638.90 : x
  2. Step 2: Convert to fraction form
    7,458.62/11,191.17 = 6,638.90/x
  3. Step 3: Cross multiply
    7,458.62x = 11,191.17 × 6,638.90
  4. Step 4: Simplify right side
    7,458.62x = 74,297,058.51
  5. Step 5: Solve for x
    x = 74,297,058.51/7,458.62
  6. Step 6: Final answer
    x = 9,961.23

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1.5x scale

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.