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Finding the Fourth Proportional to 5,356.48, 7,391.80 and 2,998.88

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Solution

The fourth proportional to 5,356.48, 7,391.80 and 2,998.88 is: 4,138.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.48 : 7,391.80 = 2,998.88 : x
  2. Step 2: Convert to fraction form
    5,356.48/7,391.80 = 2,998.88/x
  3. Step 3: Cross multiply
    5,356.48x = 7,391.80 × 2,998.88
  4. Step 4: Simplify right side
    5,356.48x = 22,167,121.18
  5. Step 5: Solve for x
    x = 22,167,121.18/5,356.48
  6. Step 6: Final answer
    x = 4,138.37

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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.