Home / 3,981.26-5,482.32-2,860.22

Finding the Fourth Proportional to 3,981.26, 5,482.32 and 2,860.22

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Solution

The fourth proportional to 3,981.26, 5,482.32 and 2,860.22 is: 3,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.26 : 5,482.32 = 2,860.22 : x
  2. Step 2: Convert to fraction form
    3,981.26/5,482.32 = 2,860.22/x
  3. Step 3: Cross multiply
    3,981.26x = 5,482.32 × 2,860.22
  4. Step 4: Simplify right side
    3,981.26x = 15,680,641.31
  5. Step 5: Solve for x
    x = 15,680,641.31/3,981.26
  6. Step 6: Final answer
    x = 3,938.61

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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.