Home / 1,454.19-2,169.91-1,279.23

Finding the Fourth Proportional to 1,454.19, 2,169.91 and 1,279.23

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Solution

The fourth proportional to 1,454.19, 2,169.91 and 1,279.23 is: 1,908.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.19 : 2,169.91 = 1,279.23 : x
  2. Step 2: Convert to fraction form
    1,454.19/2,169.91 = 1,279.23/x
  3. Step 3: Cross multiply
    1,454.19x = 2,169.91 × 1,279.23
  4. Step 4: Simplify right side
    1,454.19x = 2,775,810.77
  5. Step 5: Solve for x
    x = 2,775,810.77/1,454.19
  6. Step 6: Final answer
    x = 1,908.84

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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.