Home / 4,185.50-6,278.25-1,721.66

Finding the Fourth Proportional to 4,185.50, 6,278.25 and 1,721.66

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Solution

The fourth proportional to 4,185.50, 6,278.25 and 1,721.66 is: 2,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,185.50 : 6,278.25 = 1,721.66 : x
  2. Step 2: Convert to fraction form
    4,185.50/6,278.25 = 1,721.66/x
  3. Step 3: Cross multiply
    4,185.50x = 6,278.25 × 1,721.66
  4. Step 4: Simplify right side
    4,185.50x = 10,809,011.90
  5. Step 5: Solve for x
    x = 10,809,011.90/4,185.50
  6. Step 6: Final answer
    x = 2,582.49

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Double scale
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Similar ratio
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1.5x scale

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.