Home / 3,948.16-5,458.85-3,885.79

Finding the Fourth Proportional to 3,948.16, 5,458.85 and 3,885.79

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Solution

The fourth proportional to 3,948.16, 5,458.85 and 3,885.79 is: 5,372.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.16 : 5,458.85 = 3,885.79 : x
  2. Step 2: Convert to fraction form
    3,948.16/5,458.85 = 3,885.79/x
  3. Step 3: Cross multiply
    3,948.16x = 5,458.85 × 3,885.79
  4. Step 4: Simplify right side
    3,948.16x = 21,211,944.74
  5. Step 5: Solve for x
    x = 21,211,944.74/3,948.16
  6. Step 6: Final answer
    x = 5,372.62

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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.