Home / 5,201.12-7,178.88-3,607.88

Finding the Fourth Proportional to 5,201.12, 7,178.88 and 3,607.88

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Solution

The fourth proportional to 5,201.12, 7,178.88 and 3,607.88 is: 4,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,201.12 : 7,178.88 = 3,607.88 : x
  2. Step 2: Convert to fraction form
    5,201.12/7,178.88 = 3,607.88/x
  3. Step 3: Cross multiply
    5,201.12x = 7,178.88 × 3,607.88
  4. Step 4: Simplify right side
    5,201.12x = 25,900,537.57
  5. Step 5: Solve for x
    x = 25,900,537.57/5,201.12
  6. Step 6: Final answer
    x = 4,979.80

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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.