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Finding the Fourth Proportional to 3,264.72, 4,897.62 and 1,621.32

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Solution

The fourth proportional to 3,264.72, 4,897.62 and 1,621.32 is: 2,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,264.72 : 4,897.62 = 1,621.32 : x
  2. Step 2: Convert to fraction form
    3,264.72/4,897.62 = 1,621.32/x
  3. Step 3: Cross multiply
    3,264.72x = 4,897.62 × 1,621.32
  4. Step 4: Simplify right side
    3,264.72x = 7,940,609.26
  5. Step 5: Solve for x
    x = 7,940,609.26/3,264.72
  6. Step 6: Final answer
    x = 2,432.25

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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.