Home / 7,146.01-9,861.48-4,121.12

Finding the Fourth Proportional to 7,146.01, 9,861.48 and 4,121.12

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Solution

The fourth proportional to 7,146.01, 9,861.48 and 4,121.12 is: 5,687.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.01 : 9,861.48 = 4,121.12 : x
  2. Step 2: Convert to fraction form
    7,146.01/9,861.48 = 4,121.12/x
  3. Step 3: Cross multiply
    7,146.01x = 9,861.48 × 4,121.12
  4. Step 4: Simplify right side
    7,146.01x = 40,640,297.20
  5. Step 5: Solve for x
    x = 40,640,297.20/7,146.01
  6. Step 6: Final answer
    x = 5,687.13

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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.