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Finding the Fourth Proportional to 6,641.64, 9,165.90 and 4,399.62

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Solution

The fourth proportional to 6,641.64, 9,165.90 and 4,399.62 is: 6,071.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.64 : 9,165.90 = 4,399.62 : x
  2. Step 2: Convert to fraction form
    6,641.64/9,165.90 = 4,399.62/x
  3. Step 3: Cross multiply
    6,641.64x = 9,165.90 × 4,399.62
  4. Step 4: Simplify right side
    6,641.64x = 40,326,476.96
  5. Step 5: Solve for x
    x = 40,326,476.96/6,641.64
  6. Step 6: Final answer
    x = 6,071.76

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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.