Home / 5,278.91-7,285.65-3,290.09

Finding the Fourth Proportional to 5,278.91, 7,285.65 and 3,290.09

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Solution

The fourth proportional to 5,278.91, 7,285.65 and 3,290.09 is: 4,540.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.91 : 7,285.65 = 3,290.09 : x
  2. Step 2: Convert to fraction form
    5,278.91/7,285.65 = 3,290.09/x
  3. Step 3: Cross multiply
    5,278.91x = 7,285.65 × 3,290.09
  4. Step 4: Simplify right side
    5,278.91x = 23,970,444.21
  5. Step 5: Solve for x
    x = 23,970,444.21/5,278.91
  6. Step 6: Final answer
    x = 4,540.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.