Home / 3,712.17-5,122.71-2,140.32

Finding the Fourth Proportional to 3,712.17, 5,122.71 and 2,140.32

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Solution

The fourth proportional to 3,712.17, 5,122.71 and 2,140.32 is: 2,953.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.17 : 5,122.71 = 2,140.32 : x
  2. Step 2: Convert to fraction form
    3,712.17/5,122.71 = 2,140.32/x
  3. Step 3: Cross multiply
    3,712.17x = 5,122.71 × 2,140.32
  4. Step 4: Simplify right side
    3,712.17x = 10,964,238.67
  5. Step 5: Solve for x
    x = 10,964,238.67/3,712.17
  6. Step 6: Final answer
    x = 2,953.59

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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.