Home / 3,134.70-4,301.10-2,988.90

Finding the Fourth Proportional to 3,134.70, 4,301.10 and 2,988.90

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Solution

The fourth proportional to 3,134.70, 4,301.10 and 2,988.90 is: 4,101.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,134.70 : 4,301.10 = 2,988.90 : x
  2. Step 2: Convert to fraction form
    3,134.70/4,301.10 = 2,988.90/x
  3. Step 3: Cross multiply
    3,134.70x = 4,301.10 × 2,988.90
  4. Step 4: Simplify right side
    3,134.70x = 12,855,557.79
  5. Step 5: Solve for x
    x = 12,855,557.79/3,134.70
  6. Step 6: Final answer
    x = 4,101.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.