Home / 7,139.38-10,706.91-2,756.02

Finding the Fourth Proportional to 7,139.38, 10,706.91 and 2,756.02

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Solution

The fourth proportional to 7,139.38, 10,706.91 and 2,756.02 is: 4,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.38 : 10,706.91 = 2,756.02 : x
  2. Step 2: Convert to fraction form
    7,139.38/10,706.91 = 2,756.02/x
  3. Step 3: Cross multiply
    7,139.38x = 10,706.91 × 2,756.02
  4. Step 4: Simplify right side
    7,139.38x = 29,508,458.10
  5. Step 5: Solve for x
    x = 29,508,458.10/7,139.38
  6. Step 6: Final answer
    x = 4,133.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.