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Finding the Fourth Proportional to 3,266.76, 4,901.70 and 1,621.32

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Solution

The fourth proportional to 3,266.76, 4,901.70 and 1,621.32 is: 2,432.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,266.76 : 4,901.70 = 1,621.32 : x
  2. Step 2: Convert to fraction form
    3,266.76/4,901.70 = 1,621.32/x
  3. Step 3: Cross multiply
    3,266.76x = 4,901.70 × 1,621.32
  4. Step 4: Simplify right side
    3,266.76x = 7,947,224.24
  5. Step 5: Solve for x
    x = 7,947,224.24/3,266.76
  6. Step 6: Final answer
    x = 2,432.75

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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.