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Finding the Fourth Proportional to 6,981.40, 10,496.40 and 5,912.20

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Solution

The fourth proportional to 6,981.40, 10,496.40 and 5,912.20 is: 8,888.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.40 : 10,496.40 = 5,912.20 : x
  2. Step 2: Convert to fraction form
    6,981.40/10,496.40 = 5,912.20/x
  3. Step 3: Cross multiply
    6,981.40x = 10,496.40 × 5,912.20
  4. Step 4: Simplify right side
    6,981.40x = 62,056,816.08
  5. Step 5: Solve for x
    x = 62,056,816.08/6,981.40
  6. Step 6: Final answer
    x = 8,888.88

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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.