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Finding the Fourth Proportional to 6,489.72, 8,955.26 and 3,656.17

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Solution

The fourth proportional to 6,489.72, 8,955.26 and 3,656.17 is: 5,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489.72 : 8,955.26 = 3,656.17 : x
  2. Step 2: Convert to fraction form
    6,489.72/8,955.26 = 3,656.17/x
  3. Step 3: Cross multiply
    6,489.72x = 8,955.26 × 3,656.17
  4. Step 4: Simplify right side
    6,489.72x = 32,741,959.58
  5. Step 5: Solve for x
    x = 32,741,959.58/6,489.72
  6. Step 6: Final answer
    x = 5,045.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.