Home / 9,178.72-12,666.60-5,199.44

Finding the Fourth Proportional to 9,178.72, 12,666.60 and 5,199.44

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Solution

The fourth proportional to 9,178.72, 12,666.60 and 5,199.44 is: 7,175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.72 : 12,666.60 = 5,199.44 : x
  2. Step 2: Convert to fraction form
    9,178.72/12,666.60 = 5,199.44/x
  3. Step 3: Cross multiply
    9,178.72x = 12,666.60 × 5,199.44
  4. Step 4: Simplify right side
    9,178.72x = 65,859,226.70
  5. Step 5: Solve for x
    x = 65,859,226.70/9,178.72
  6. Step 6: Final answer
    x = 7,175.21

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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.