Home / 3,521.88-5,281.13-1,329.21

Finding the Fourth Proportional to 3,521.88, 5,281.13 and 1,329.21

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Solution

The fourth proportional to 3,521.88, 5,281.13 and 1,329.21 is: 1,993.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.88 : 5,281.13 = 1,329.21 : x
  2. Step 2: Convert to fraction form
    3,521.88/5,281.13 = 1,329.21/x
  3. Step 3: Cross multiply
    3,521.88x = 5,281.13 × 1,329.21
  4. Step 4: Simplify right side
    3,521.88x = 7,019,734.13
  5. Step 5: Solve for x
    x = 7,019,734.13/3,521.88
  6. Step 6: Final answer
    x = 1,993.18

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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.