Home / 2,691.39-3,713.76-1,571.51

Finding the Fourth Proportional to 2,691.39, 3,713.76 and 1,571.51

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Solution

The fourth proportional to 2,691.39, 3,713.76 and 1,571.51 is: 2,168.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.39 : 3,713.76 = 1,571.51 : x
  2. Step 2: Convert to fraction form
    2,691.39/3,713.76 = 1,571.51/x
  3. Step 3: Cross multiply
    2,691.39x = 3,713.76 × 1,571.51
  4. Step 4: Simplify right side
    2,691.39x = 5,836,192.41
  5. Step 5: Solve for x
    x = 5,836,192.41/2,691.39
  6. Step 6: Final answer
    x = 2,168.47

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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.