Home / 3,712.64-5,123.60-2,140.96

Finding the Fourth Proportional to 3,712.64, 5,123.60 and 2,140.96

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Solution

The fourth proportional to 3,712.64, 5,123.60 and 2,140.96 is: 2,954.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.64 : 5,123.60 = 2,140.96 : x
  2. Step 2: Convert to fraction form
    3,712.64/5,123.60 = 2,140.96/x
  3. Step 3: Cross multiply
    3,712.64x = 5,123.60 × 2,140.96
  4. Step 4: Simplify right side
    3,712.64x = 10,969,422.66
  5. Step 5: Solve for x
    x = 10,969,422.66/3,712.64
  6. Step 6: Final answer
    x = 2,954.62

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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.