Home / 4,279.38-6,420.20-1,814.28

Finding the Fourth Proportional to 4,279.38, 6,420.20 and 1,814.28

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Solution

The fourth proportional to 4,279.38, 6,420.20 and 1,814.28 is: 2,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.38 : 6,420.20 = 1,814.28 : x
  2. Step 2: Convert to fraction form
    4,279.38/6,420.20 = 1,814.28/x
  3. Step 3: Cross multiply
    4,279.38x = 6,420.20 × 1,814.28
  4. Step 4: Simplify right side
    4,279.38x = 11,648,058.73
  5. Step 5: Solve for x
    x = 11,648,058.73/4,279.38
  6. Step 6: Final answer
    x = 2,721.90

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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.