Home / 3,100.28-4,265.69-2,679.28

Finding the Fourth Proportional to 3,100.28, 4,265.69 and 2,679.28

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Solution

The fourth proportional to 3,100.28, 4,265.69 and 2,679.28 is: 3,686.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.28 : 4,265.69 = 2,679.28 : x
  2. Step 2: Convert to fraction form
    3,100.28/4,265.69 = 2,679.28/x
  3. Step 3: Cross multiply
    3,100.28x = 4,265.69 × 2,679.28
  4. Step 4: Simplify right side
    3,100.28x = 11,428,953.84
  5. Step 5: Solve for x
    x = 11,428,953.84/3,100.28
  6. Step 6: Final answer
    x = 3,686.43

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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.