Home / 6,279.78-9,422.40-2,385.30

Finding the Fourth Proportional to 6,279.78, 9,422.40 and 2,385.30

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Solution

The fourth proportional to 6,279.78, 9,422.40 and 2,385.30 is: 3,578.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.78 : 9,422.40 = 2,385.30 : x
  2. Step 2: Convert to fraction form
    6,279.78/9,422.40 = 2,385.30/x
  3. Step 3: Cross multiply
    6,279.78x = 9,422.40 × 2,385.30
  4. Step 4: Simplify right side
    6,279.78x = 22,475,250.72
  5. Step 5: Solve for x
    x = 22,475,250.72/6,279.78
  6. Step 6: Final answer
    x = 3,578.99

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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.