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Finding the Fourth Proportional to 5,719.04, 7,891.92 and 5,551.28

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Solution

The fourth proportional to 5,719.04, 7,891.92 and 5,551.28 is: 7,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.04 : 7,891.92 = 5,551.28 : x
  2. Step 2: Convert to fraction form
    5,719.04/7,891.92 = 5,551.28/x
  3. Step 3: Cross multiply
    5,719.04x = 7,891.92 × 5,551.28
  4. Step 4: Simplify right side
    5,719.04x = 43,810,257.66
  5. Step 5: Solve for x
    x = 43,810,257.66/5,719.04
  6. Step 6: Final answer
    x = 7,660.42

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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.