Home / 6,981.46-9,631.66-3,995.70

Finding the Fourth Proportional to 6,981.46, 9,631.66 and 3,995.70

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Solution

The fourth proportional to 6,981.46, 9,631.66 and 3,995.70 is: 5,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.46 : 9,631.66 = 3,995.70 : x
  2. Step 2: Convert to fraction form
    6,981.46/9,631.66 = 3,995.70/x
  3. Step 3: Cross multiply
    6,981.46x = 9,631.66 × 3,995.70
  4. Step 4: Simplify right side
    6,981.46x = 38,485,223.86
  5. Step 5: Solve for x
    x = 38,485,223.86/6,981.46
  6. Step 6: Final answer
    x = 5,512.49

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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.