Home / 5,228.59-7,842.75-1,279.84

Finding the Fourth Proportional to 5,228.59, 7,842.75 and 1,279.84

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Solution

The fourth proportional to 5,228.59, 7,842.75 and 1,279.84 is: 1,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.59 : 7,842.75 = 1,279.84 : x
  2. Step 2: Convert to fraction form
    5,228.59/7,842.75 = 1,279.84/x
  3. Step 3: Cross multiply
    5,228.59x = 7,842.75 × 1,279.84
  4. Step 4: Simplify right side
    5,228.59x = 10,037,465.16
  5. Step 5: Solve for x
    x = 10,037,465.16/5,228.59
  6. Step 6: Final answer
    x = 1,919.73

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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.