Home / 3,971.12-5,482.43-2,479.80

Finding the Fourth Proportional to 3,971.12, 5,482.43 and 2,479.80

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Solution

The fourth proportional to 3,971.12, 5,482.43 and 2,479.80 is: 3,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.12 : 5,482.43 = 2,479.80 : x
  2. Step 2: Convert to fraction form
    3,971.12/5,482.43 = 2,479.80/x
  3. Step 3: Cross multiply
    3,971.12x = 5,482.43 × 2,479.80
  4. Step 4: Simplify right side
    3,971.12x = 13,595,317.52
  5. Step 5: Solve for x
    x = 13,595,317.52/3,971.12
  6. Step 6: Final answer
    x = 3,423.55

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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.