Home / 4,279.83-6,420.33-1,505.85

Finding the Fourth Proportional to 4,279.83, 6,420.33 and 1,505.85

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Solution

The fourth proportional to 4,279.83, 6,420.33 and 1,505.85 is: 2,258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.83 : 6,420.33 = 1,505.85 : x
  2. Step 2: Convert to fraction form
    4,279.83/6,420.33 = 1,505.85/x
  3. Step 3: Cross multiply
    4,279.83x = 6,420.33 × 1,505.85
  4. Step 4: Simplify right side
    4,279.83x = 9,668,053.93
  5. Step 5: Solve for x
    x = 9,668,053.93/4,279.83
  6. Step 6: Final answer
    x = 2,258.98

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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.