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Finding the Fourth Proportional to 3,895.89, 5,375.51 and 2,479.07

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Solution

The fourth proportional to 3,895.89, 5,375.51 and 2,479.07 is: 3,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.89 : 5,375.51 = 2,479.07 : x
  2. Step 2: Convert to fraction form
    3,895.89/5,375.51 = 2,479.07/x
  3. Step 3: Cross multiply
    3,895.89x = 5,375.51 × 2,479.07
  4. Step 4: Simplify right side
    3,895.89x = 13,326,265.58
  5. Step 5: Solve for x
    x = 13,326,265.58/3,895.89
  6. Step 6: Final answer
    x = 3,420.60

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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.