Home / 3,521.10-5,278.35-1,331.30

Finding the Fourth Proportional to 3,521.10, 5,278.35 and 1,331.30

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Solution

The fourth proportional to 3,521.10, 5,278.35 and 1,331.30 is: 1,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.10 : 5,278.35 = 1,331.30 : x
  2. Step 2: Convert to fraction form
    3,521.10/5,278.35 = 1,331.30/x
  3. Step 3: Cross multiply
    3,521.10x = 5,278.35 × 1,331.30
  4. Step 4: Simplify right side
    3,521.10x = 7,027,067.36
  5. Step 5: Solve for x
    x = 7,027,067.36/3,521.10
  6. Step 6: Final answer
    x = 1,995.70

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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.