Home / 3,521.48-5,278.82-1,328.68

Finding the Fourth Proportional to 3,521.48, 5,278.82 and 1,328.68

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Solution

The fourth proportional to 3,521.48, 5,278.82 and 1,328.68 is: 1,991.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.48 : 5,278.82 = 1,328.68 : x
  2. Step 2: Convert to fraction form
    3,521.48/5,278.82 = 1,328.68/x
  3. Step 3: Cross multiply
    3,521.48x = 5,278.82 × 1,328.68
  4. Step 4: Simplify right side
    3,521.48x = 7,013,862.56
  5. Step 5: Solve for x
    x = 7,013,862.56/3,521.48
  6. Step 6: Final answer
    x = 1,991.74

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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.