Home / 1,279.84-1,910.18-1,177.24

Finding the Fourth Proportional to 1,279.84, 1,910.18 and 1,177.24

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Solution

The fourth proportional to 1,279.84, 1,910.18 and 1,177.24 is: 1,757.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.84 : 1,910.18 = 1,177.24 : x
  2. Step 2: Convert to fraction form
    1,279.84/1,910.18 = 1,177.24/x
  3. Step 3: Cross multiply
    1,279.84x = 1,910.18 × 1,177.24
  4. Step 4: Simplify right side
    1,279.84x = 2,248,740.30
  5. Step 5: Solve for x
    x = 2,248,740.30/1,279.84
  6. Step 6: Final answer
    x = 1,757.05

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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.