Home / 3,521.12-5,278.59-1,331.39

Finding the Fourth Proportional to 3,521.12, 5,278.59 and 1,331.39

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Solution

The fourth proportional to 3,521.12, 5,278.59 and 1,331.39 is: 1,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.12 : 5,278.59 = 1,331.39 : x
  2. Step 2: Convert to fraction form
    3,521.12/5,278.59 = 1,331.39/x
  3. Step 3: Cross multiply
    3,521.12x = 5,278.59 × 1,331.39
  4. Step 4: Simplify right side
    3,521.12x = 7,027,875.14
  5. Step 5: Solve for x
    x = 7,027,875.14/3,521.12
  6. Step 6: Final answer
    x = 1,995.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.