Home / 7,146.30-9,862.19-4,161.65

Finding the Fourth Proportional to 7,146.30, 9,862.19 and 4,161.65

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Solution

The fourth proportional to 7,146.30, 9,862.19 and 4,161.65 is: 5,743.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.30 : 9,862.19 = 4,161.65 : x
  2. Step 2: Convert to fraction form
    7,146.30/9,862.19 = 4,161.65/x
  3. Step 3: Cross multiply
    7,146.30x = 9,862.19 × 4,161.65
  4. Step 4: Simplify right side
    7,146.30x = 41,042,983.01
  5. Step 5: Solve for x
    x = 41,042,983.01/7,146.30
  6. Step 6: Final answer
    x = 5,743.25

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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.