Home / 2,279.06-3,400.70-2,139.74

Finding the Fourth Proportional to 2,279.06, 3,400.70 and 2,139.74

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Solution

The fourth proportional to 2,279.06, 3,400.70 and 2,139.74 is: 3,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.06 : 3,400.70 = 2,139.74 : x
  2. Step 2: Convert to fraction form
    2,279.06/3,400.70 = 2,139.74/x
  3. Step 3: Cross multiply
    2,279.06x = 3,400.70 × 2,139.74
  4. Step 4: Simplify right side
    2,279.06x = 7,276,586.12
  5. Step 5: Solve for x
    x = 7,276,586.12/2,279.06
  6. Step 6: Final answer
    x = 3,192.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.