Home / 5,228.25-7,842.27-1,279.55

Finding the Fourth Proportional to 5,228.25, 7,842.27 and 1,279.55

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Solution

The fourth proportional to 5,228.25, 7,842.27 and 1,279.55 is: 1,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.25 : 7,842.27 = 1,279.55 : x
  2. Step 2: Convert to fraction form
    5,228.25/7,842.27 = 1,279.55/x
  3. Step 3: Cross multiply
    5,228.25x = 7,842.27 × 1,279.55
  4. Step 4: Simplify right side
    5,228.25x = 10,034,549.67
  5. Step 5: Solve for x
    x = 10,034,549.67/5,228.25
  6. Step 6: Final answer
    x = 1,919.30

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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.