Home / 5,636.73-7,781.79-4,219.91

Finding the Fourth Proportional to 5,636.73, 7,781.79 and 4,219.91

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Solution

The fourth proportional to 5,636.73, 7,781.79 and 4,219.91 is: 5,825.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.73 : 7,781.79 = 4,219.91 : x
  2. Step 2: Convert to fraction form
    5,636.73/7,781.79 = 4,219.91/x
  3. Step 3: Cross multiply
    5,636.73x = 7,781.79 × 4,219.91
  4. Step 4: Simplify right side
    5,636.73x = 32,838,414.53
  5. Step 5: Solve for x
    x = 32,838,414.53/5,636.73
  6. Step 6: Final answer
    x = 5,825.79

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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.