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Finding the Fourth Proportional to 5,357.12, 7,392.16 and 2,998.88

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Solution

The fourth proportional to 5,357.12, 7,392.16 and 2,998.88 is: 4,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,357.12 : 7,392.16 = 2,998.88 : x
  2. Step 2: Convert to fraction form
    5,357.12/7,392.16 = 2,998.88/x
  3. Step 3: Cross multiply
    5,357.12x = 7,392.16 × 2,998.88
  4. Step 4: Simplify right side
    5,357.12x = 22,168,200.78
  5. Step 5: Solve for x
    x = 22,168,200.78/5,357.12
  6. Step 6: Final answer
    x = 4,138.08

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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.