Home / 5,705.66-7,874.80-4,217.90

Finding the Fourth Proportional to 5,705.66, 7,874.80 and 4,217.90

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Solution

The fourth proportional to 5,705.66, 7,874.80 and 4,217.90 is: 5,821.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.66 : 7,874.80 = 4,217.90 : x
  2. Step 2: Convert to fraction form
    5,705.66/7,874.80 = 4,217.90/x
  3. Step 3: Cross multiply
    5,705.66x = 7,874.80 × 4,217.90
  4. Step 4: Simplify right side
    5,705.66x = 33,215,069.00
  5. Step 5: Solve for x
    x = 33,215,069.00/5,705.66
  6. Step 6: Final answer
    x = 5,821.42

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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.