Home / 1,340.98-2,012.19-1,279.06

Finding the Fourth Proportional to 1,340.98, 2,012.19 and 1,279.06

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Solution

The fourth proportional to 1,340.98, 2,012.19 and 1,279.06 is: 1,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.98 : 2,012.19 = 1,279.06 : x
  2. Step 2: Convert to fraction form
    1,340.98/2,012.19 = 1,279.06/x
  3. Step 3: Cross multiply
    1,340.98x = 2,012.19 × 1,279.06
  4. Step 4: Simplify right side
    1,340.98x = 2,573,711.74
  5. Step 5: Solve for x
    x = 2,573,711.74/1,340.98
  6. Step 6: Final answer
    x = 1,919.28

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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.