Home / 5,479.89-7,562.96-3,121.58

Finding the Fourth Proportional to 5,479.89, 7,562.96 and 3,121.58

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Solution

The fourth proportional to 5,479.89, 7,562.96 and 3,121.58 is: 4,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.89 : 7,562.96 = 3,121.58 : x
  2. Step 2: Convert to fraction form
    5,479.89/7,562.96 = 3,121.58/x
  3. Step 3: Cross multiply
    5,479.89x = 7,562.96 × 3,121.58
  4. Step 4: Simplify right side
    5,479.89x = 23,608,331.25
  5. Step 5: Solve for x
    x = 23,608,331.25/5,479.89
  6. Step 6: Final answer
    x = 4,308.18

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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.