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Finding the Fourth Proportional to 7,170.92, 9,896.28 and 4,026.88

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Solution

The fourth proportional to 7,170.92, 9,896.28 and 4,026.88 is: 5,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.92 : 9,896.28 = 4,026.88 : x
  2. Step 2: Convert to fraction form
    7,170.92/9,896.28 = 4,026.88/x
  3. Step 3: Cross multiply
    7,170.92x = 9,896.28 × 4,026.88
  4. Step 4: Simplify right side
    7,170.92x = 39,851,132.01
  5. Step 5: Solve for x
    x = 39,851,132.01/7,170.92
  6. Step 6: Final answer
    x = 5,557.32

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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.