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Finding the Fourth Proportional to 6,393.60, 8,834.40 and 5,227.20

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Solution

The fourth proportional to 6,393.60, 8,834.40 and 5,227.20 is: 7,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393.60 : 8,834.40 = 5,227.20 : x
  2. Step 2: Convert to fraction form
    6,393.60/8,834.40 = 5,227.20/x
  3. Step 3: Cross multiply
    6,393.60x = 8,834.40 × 5,227.20
  4. Step 4: Simplify right side
    6,393.60x = 46,179,175.68
  5. Step 5: Solve for x
    x = 46,179,175.68/6,393.60
  6. Step 6: Final answer
    x = 7,222.72

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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.