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Finding the Fourth Proportional to 6,655.68, 9,979.20 and 3,370.32

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Solution

The fourth proportional to 6,655.68, 9,979.20 and 3,370.32 is: 5,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,655.68 : 9,979.20 = 3,370.32 : x
  2. Step 2: Convert to fraction form
    6,655.68/9,979.20 = 3,370.32/x
  3. Step 3: Cross multiply
    6,655.68x = 9,979.20 × 3,370.32
  4. Step 4: Simplify right side
    6,655.68x = 33,633,097.34
  5. Step 5: Solve for x
    x = 33,633,097.34/6,655.68
  6. Step 6: Final answer
    x = 5,053.29

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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.