Home / 3,126.36-4,306.86-2,901.72

Finding the Fourth Proportional to 3,126.36, 4,306.86 and 2,901.72

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Solution

The fourth proportional to 3,126.36, 4,306.86 and 2,901.72 is: 3,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.36 : 4,306.86 = 2,901.72 : x
  2. Step 2: Convert to fraction form
    3,126.36/4,306.86 = 2,901.72/x
  3. Step 3: Cross multiply
    3,126.36x = 4,306.86 × 2,901.72
  4. Step 4: Simplify right side
    3,126.36x = 12,497,301.80
  5. Step 5: Solve for x
    x = 12,497,301.80/3,126.36
  6. Step 6: Final answer
    x = 3,997.40

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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.