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Finding the Fourth Proportional to 3,899.32, 5,374.02 and 3,236.20

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Solution

The fourth proportional to 3,899.32, 5,374.02 and 3,236.20 is: 4,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.32 : 5,374.02 = 3,236.20 : x
  2. Step 2: Convert to fraction form
    3,899.32/5,374.02 = 3,236.20/x
  3. Step 3: Cross multiply
    3,899.32x = 5,374.02 × 3,236.20
  4. Step 4: Simplify right side
    3,899.32x = 17,391,403.52
  5. Step 5: Solve for x
    x = 17,391,403.52/3,899.32
  6. Step 6: Final answer
    x = 4,460.11

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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.