Home / 3,712.64-5,123.32-2,140.97

Finding the Fourth Proportional to 3,712.64, 5,123.32 and 2,140.97

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Solution

The fourth proportional to 3,712.64, 5,123.32 and 2,140.97 is: 2,954.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.64 : 5,123.32 = 2,140.97 : x
  2. Step 2: Convert to fraction form
    3,712.64/5,123.32 = 2,140.97/x
  3. Step 3: Cross multiply
    3,712.64x = 5,123.32 × 2,140.97
  4. Step 4: Simplify right side
    3,712.64x = 10,968,843.45
  5. Step 5: Solve for x
    x = 10,968,843.45/3,712.64
  6. Step 6: Final answer
    x = 2,954.46

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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.