Home / 6,621.62-9,138.08-3,968.52

Finding the Fourth Proportional to 6,621.62, 9,138.08 and 3,968.52

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Solution

The fourth proportional to 6,621.62, 9,138.08 and 3,968.52 is: 5,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.62 : 9,138.08 = 3,968.52 : x
  2. Step 2: Convert to fraction form
    6,621.62/9,138.08 = 3,968.52/x
  3. Step 3: Cross multiply
    6,621.62x = 9,138.08 × 3,968.52
  4. Step 4: Simplify right side
    6,621.62x = 36,264,663.16
  5. Step 5: Solve for x
    x = 36,264,663.16/6,621.62
  6. Step 6: Final answer
    x = 5,476.70

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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.