Home / 7,127.55-10,691.51-3,378.45

Finding the Fourth Proportional to 7,127.55, 10,691.51 and 3,378.45

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Solution

The fourth proportional to 7,127.55, 10,691.51 and 3,378.45 is: 5,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.55 : 10,691.51 = 3,378.45 : x
  2. Step 2: Convert to fraction form
    7,127.55/10,691.51 = 3,378.45/x
  3. Step 3: Cross multiply
    7,127.55x = 10,691.51 × 3,378.45
  4. Step 4: Simplify right side
    7,127.55x = 36,120,715.07
  5. Step 5: Solve for x
    x = 36,120,715.07/7,127.55
  6. Step 6: Final answer
    x = 5,067.76

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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.