Home / 7,126.47-10,689.71-1,932.21

Finding the Fourth Proportional to 7,126.47, 10,689.71 and 1,932.21

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Solution

The fourth proportional to 7,126.47, 10,689.71 and 1,932.21 is: 2,898.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.47 : 10,689.71 = 1,932.21 : x
  2. Step 2: Convert to fraction form
    7,126.47/10,689.71 = 1,932.21/x
  3. Step 3: Cross multiply
    7,126.47x = 10,689.71 × 1,932.21
  4. Step 4: Simplify right side
    7,126.47x = 20,654,754.90
  5. Step 5: Solve for x
    x = 20,654,754.90/7,126.47
  6. Step 6: Final answer
    x = 2,898.32

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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.