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Finding the Fourth Proportional to 6,375.68, 8,805.12 and 5,209.28

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Solution

The fourth proportional to 6,375.68, 8,805.12 and 5,209.28 is: 7,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,375.68 : 8,805.12 = 5,209.28 : x
  2. Step 2: Convert to fraction form
    6,375.68/8,805.12 = 5,209.28/x
  3. Step 3: Cross multiply
    6,375.68x = 8,805.12 × 5,209.28
  4. Step 4: Simplify right side
    6,375.68x = 45,868,335.51
  5. Step 5: Solve for x
    x = 45,868,335.51/6,375.68
  6. Step 6: Final answer
    x = 7,194.27

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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.