Home / 5,479.70-8,221.50-1,781.93

Finding the Fourth Proportional to 5,479.70, 8,221.50 and 1,781.93

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Solution

The fourth proportional to 5,479.70, 8,221.50 and 1,781.93 is: 2,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.70 : 8,221.50 = 1,781.93 : x
  2. Step 2: Convert to fraction form
    5,479.70/8,221.50 = 1,781.93/x
  3. Step 3: Cross multiply
    5,479.70x = 8,221.50 × 1,781.93
  4. Step 4: Simplify right side
    5,479.70x = 14,650,137.50
  5. Step 5: Solve for x
    x = 14,650,137.50/5,479.70
  6. Step 6: Final answer
    x = 2,673.53

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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.