Home / 7,146.71-9,863.13-4,121.91

Finding the Fourth Proportional to 7,146.71, 9,863.13 and 4,121.91

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Solution

The fourth proportional to 7,146.71, 9,863.13 and 4,121.91 is: 5,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.71 : 9,863.13 = 4,121.91 : x
  2. Step 2: Convert to fraction form
    7,146.71/9,863.13 = 4,121.91/x
  3. Step 3: Cross multiply
    7,146.71x = 9,863.13 × 4,121.91
  4. Step 4: Simplify right side
    7,146.71x = 40,654,949.64
  5. Step 5: Solve for x
    x = 40,654,949.64/7,146.71
  6. Step 6: Final answer
    x = 5,688.63

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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.