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Finding the Fourth Proportional to 2,432, 3,356.16 and 1,328

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Solution

The fourth proportional to 2,432, 3,356.16 and 1,328 is: 1,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,432 : 3,356.16 = 1,328 : x
  2. Step 2: Convert to fraction form
    2,432/3,356.16 = 1,328/x
  3. Step 3: Cross multiply
    2,432x = 3,356.16 × 1,328
  4. Step 4: Simplify right side
    2,432x = 4,456,980.48
  5. Step 5: Solve for x
    x = 4,456,980.48/2,432
  6. Step 6: Final answer
    x = 1,832.64

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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.