Home / 3,540.78-4,886.73-2,143.53

Finding the Fourth Proportional to 3,540.78, 4,886.73 and 2,143.53

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Solution

The fourth proportional to 3,540.78, 4,886.73 and 2,143.53 is: 2,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.78 : 4,886.73 = 2,143.53 : x
  2. Step 2: Convert to fraction form
    3,540.78/4,886.73 = 2,143.53/x
  3. Step 3: Cross multiply
    3,540.78x = 4,886.73 × 2,143.53
  4. Step 4: Simplify right side
    3,540.78x = 10,474,852.36
  5. Step 5: Solve for x
    x = 10,474,852.36/3,540.78
  6. Step 6: Final answer
    x = 2,958.35

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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.