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Finding the Fourth Proportional to 7,139.62, 10,708.14 and 1,944.28

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Solution

The fourth proportional to 7,139.62, 10,708.14 and 1,944.28 is: 2,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.62 : 10,708.14 = 1,944.28 : x
  2. Step 2: Convert to fraction form
    7,139.62/10,708.14 = 1,944.28/x
  3. Step 3: Cross multiply
    7,139.62x = 10,708.14 × 1,944.28
  4. Step 4: Simplify right side
    7,139.62x = 20,819,622.44
  5. Step 5: Solve for x
    x = 20,819,622.44/7,139.62
  6. Step 6: Final answer
    x = 2,916.07

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1.5x scale

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.