Home / 3,938.80-5,439.06-3,752.08

Finding the Fourth Proportional to 3,938.80, 5,439.06 and 3,752.08

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Solution

The fourth proportional to 3,938.80, 5,439.06 and 3,752.08 is: 5,181.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.80 : 5,439.06 = 3,752.08 : x
  2. Step 2: Convert to fraction form
    3,938.80/5,439.06 = 3,752.08/x
  3. Step 3: Cross multiply
    3,938.80x = 5,439.06 × 3,752.08
  4. Step 4: Simplify right side
    3,938.80x = 20,407,788.24
  5. Step 5: Solve for x
    x = 20,407,788.24/3,938.80
  6. Step 6: Final answer
    x = 5,181.22

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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.