Home / 9,178.25-12,666.20-5,199.39

Finding the Fourth Proportional to 9,178.25, 12,666.20 and 5,199.39

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Solution

The fourth proportional to 9,178.25, 12,666.20 and 5,199.39 is: 7,175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.25 : 12,666.20 = 5,199.39 : x
  2. Step 2: Convert to fraction form
    9,178.25/12,666.20 = 5,199.39/x
  3. Step 3: Cross multiply
    9,178.25x = 12,666.20 × 5,199.39
  4. Step 4: Simplify right side
    9,178.25x = 65,856,487.62
  5. Step 5: Solve for x
    x = 65,856,487.62/9,178.25
  6. Step 6: Final answer
    x = 7,175.28

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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.