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Finding the Fourth Proportional to 6,721.59, 10,081.03 and 6,388.16

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Solution

The fourth proportional to 6,721.59, 10,081.03 and 6,388.16 is: 9,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.59 : 10,081.03 = 6,388.16 : x
  2. Step 2: Convert to fraction form
    6,721.59/10,081.03 = 6,388.16/x
  3. Step 3: Cross multiply
    6,721.59x = 10,081.03 × 6,388.16
  4. Step 4: Simplify right side
    6,721.59x = 64,399,232.60
  5. Step 5: Solve for x
    x = 64,399,232.60/6,721.59
  6. Step 6: Final answer
    x = 9,580.95

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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.