Home / 2,128.94-2,937.17-1,342.97

Finding the Fourth Proportional to 2,128.94, 2,937.17 and 1,342.97

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Solution

The fourth proportional to 2,128.94, 2,937.17 and 1,342.97 is: 1,852.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.94 : 2,937.17 = 1,342.97 : x
  2. Step 2: Convert to fraction form
    2,128.94/2,937.17 = 1,342.97/x
  3. Step 3: Cross multiply
    2,128.94x = 2,937.17 × 1,342.97
  4. Step 4: Simplify right side
    2,128.94x = 3,944,524.48
  5. Step 5: Solve for x
    x = 3,944,524.48/2,128.94
  6. Step 6: Final answer
    x = 1,852.81

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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.