Home / 7,140.62-10,710.92-1,947.26

Finding the Fourth Proportional to 7,140.62, 10,710.92 and 1,947.26

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Solution

The fourth proportional to 7,140.62, 10,710.92 and 1,947.26 is: 2,920.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.62 : 10,710.92 = 1,947.26 : x
  2. Step 2: Convert to fraction form
    7,140.62/10,710.92 = 1,947.26/x
  3. Step 3: Cross multiply
    7,140.62x = 10,710.92 × 1,947.26
  4. Step 4: Simplify right side
    7,140.62x = 20,856,897.39
  5. Step 5: Solve for x
    x = 20,856,897.39/7,140.62
  6. Step 6: Final answer
    x = 2,920.88

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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.