Home / 3,712.54-5,122.70-2,140.32

Finding the Fourth Proportional to 3,712.54, 5,122.70 and 2,140.32

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Solution

The fourth proportional to 3,712.54, 5,122.70 and 2,140.32 is: 2,953.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.54 : 5,122.70 = 2,140.32 : x
  2. Step 2: Convert to fraction form
    3,712.54/5,122.70 = 2,140.32/x
  3. Step 3: Cross multiply
    3,712.54x = 5,122.70 × 2,140.32
  4. Step 4: Simplify right side
    3,712.54x = 10,964,217.26
  5. Step 5: Solve for x
    x = 10,964,217.26/3,712.54
  6. Step 6: Final answer
    x = 2,953.29

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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.