Home / 2,126.23-3,191.36-1,306.10

Finding the Fourth Proportional to 2,126.23, 3,191.36 and 1,306.10

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Solution

The fourth proportional to 2,126.23, 3,191.36 and 1,306.10 is: 1,960.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.23 : 3,191.36 = 1,306.10 : x
  2. Step 2: Convert to fraction form
    2,126.23/3,191.36 = 1,306.10/x
  3. Step 3: Cross multiply
    2,126.23x = 3,191.36 × 1,306.10
  4. Step 4: Simplify right side
    2,126.23x = 4,168,236.74
  5. Step 5: Solve for x
    x = 4,168,236.74/2,126.23
  6. Step 6: Final answer
    x = 1,960.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.