Home / 9,140.46-12,613.11-5,161.96

Finding the Fourth Proportional to 9,140.46, 12,613.11 and 5,161.96

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Solution

The fourth proportional to 9,140.46, 12,613.11 and 5,161.96 is: 7,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.46 : 12,613.11 = 5,161.96 : x
  2. Step 2: Convert to fraction form
    9,140.46/12,613.11 = 5,161.96/x
  3. Step 3: Cross multiply
    9,140.46x = 12,613.11 × 5,161.96
  4. Step 4: Simplify right side
    9,140.46x = 65,108,369.30
  5. Step 5: Solve for x
    x = 65,108,369.30/9,140.46
  6. Step 6: Final answer
    x = 7,123.10

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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.