Home / 7,170.46-9,895.10-3,983.76

Finding the Fourth Proportional to 7,170.46, 9,895.10 and 3,983.76

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Solution

The fourth proportional to 7,170.46, 9,895.10 and 3,983.76 is: 5,497.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.46 : 9,895.10 = 3,983.76 : x
  2. Step 2: Convert to fraction form
    7,170.46/9,895.10 = 3,983.76/x
  3. Step 3: Cross multiply
    7,170.46x = 9,895.10 × 3,983.76
  4. Step 4: Simplify right side
    7,170.46x = 39,419,683.66
  5. Step 5: Solve for x
    x = 39,419,683.66/7,170.46
  6. Step 6: Final answer
    x = 5,497.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.