Home / 5,480.40-8,221.88-1,584.72

Finding the Fourth Proportional to 5,480.40, 8,221.88 and 1,584.72

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Solution

The fourth proportional to 5,480.40, 8,221.88 and 1,584.72 is: 2,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.40 : 8,221.88 = 1,584.72 : x
  2. Step 2: Convert to fraction form
    5,480.40/8,221.88 = 1,584.72/x
  3. Step 3: Cross multiply
    5,480.40x = 8,221.88 × 1,584.72
  4. Step 4: Simplify right side
    5,480.40x = 13,029,377.67
  5. Step 5: Solve for x
    x = 13,029,377.67/5,480.40
  6. Step 6: Final answer
    x = 2,377.45

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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.