Home / 6,220.19-8,578.37-3,981.22

Finding the Fourth Proportional to 6,220.19, 8,578.37 and 3,981.22

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Solution

The fourth proportional to 6,220.19, 8,578.37 and 3,981.22 is: 5,490.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,220.19 : 8,578.37 = 3,981.22 : x
  2. Step 2: Convert to fraction form
    6,220.19/8,578.37 = 3,981.22/x
  3. Step 3: Cross multiply
    6,220.19x = 8,578.37 × 3,981.22
  4. Step 4: Simplify right side
    6,220.19x = 34,152,366.72
  5. Step 5: Solve for x
    x = 34,152,366.72/6,220.19
  6. Step 6: Final answer
    x = 5,490.56

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.