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Finding the Fourth Proportional to 5,356.79, 7,392.15 and 2,998.88

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Solution

The fourth proportional to 5,356.79, 7,392.15 and 2,998.88 is: 4,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.79 : 7,392.15 = 2,998.88 : x
  2. Step 2: Convert to fraction form
    5,356.79/7,392.15 = 2,998.88/x
  3. Step 3: Cross multiply
    5,356.79x = 7,392.15 × 2,998.88
  4. Step 4: Simplify right side
    5,356.79x = 22,168,170.79
  5. Step 5: Solve for x
    x = 22,168,170.79/5,356.79
  6. Step 6: Final answer
    x = 4,138.33

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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.