Home / 2,126.70-2,934.85-1,242.56

Finding the Fourth Proportional to 2,126.70, 2,934.85 and 1,242.56

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Solution

The fourth proportional to 2,126.70, 2,934.85 and 1,242.56 is: 1,714.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.70 : 2,934.85 = 1,242.56 : x
  2. Step 2: Convert to fraction form
    2,126.70/2,934.85 = 1,242.56/x
  3. Step 3: Cross multiply
    2,126.70x = 2,934.85 × 1,242.56
  4. Step 4: Simplify right side
    2,126.70x = 3,646,727.22
  5. Step 5: Solve for x
    x = 3,646,727.22/2,126.70
  6. Step 6: Final answer
    x = 1,714.74

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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.