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Finding the Fourth Proportional to 3,975.42, 5,480.28 and 2,482.68

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Solution

The fourth proportional to 3,975.42, 5,480.28 and 2,482.68 is: 3,422.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.42 : 5,480.28 = 2,482.68 : x
  2. Step 2: Convert to fraction form
    3,975.42/5,480.28 = 2,482.68/x
  3. Step 3: Cross multiply
    3,975.42x = 5,480.28 × 2,482.68
  4. Step 4: Simplify right side
    3,975.42x = 13,605,781.55
  5. Step 5: Solve for x
    x = 13,605,781.55/3,975.42
  6. Step 6: Final answer
    x = 3,422.48

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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.