Home / 3,948.51-5,447.28-2,770.35

Finding the Fourth Proportional to 3,948.51, 5,447.28 and 2,770.35

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Solution

The fourth proportional to 3,948.51, 5,447.28 and 2,770.35 is: 3,821.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.51 : 5,447.28 = 2,770.35 : x
  2. Step 2: Convert to fraction form
    3,948.51/5,447.28 = 2,770.35/x
  3. Step 3: Cross multiply
    3,948.51x = 5,447.28 × 2,770.35
  4. Step 4: Simplify right side
    3,948.51x = 15,090,872.15
  5. Step 5: Solve for x
    x = 15,090,872.15/3,948.51
  6. Step 6: Final answer
    x = 3,821.92

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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.