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Finding the Fourth Proportional to 3,970.74, 5,959.47 and 1,632

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Solution

The fourth proportional to 3,970.74, 5,959.47 and 1,632 is: 2,449.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.74 : 5,959.47 = 1,632 : x
  2. Step 2: Convert to fraction form
    3,970.74/5,959.47 = 1,632/x
  3. Step 3: Cross multiply
    3,970.74x = 5,959.47 × 1,632
  4. Step 4: Simplify right side
    3,970.74x = 9,725,855.04
  5. Step 5: Solve for x
    x = 9,725,855.04/3,970.74
  6. Step 6: Final answer
    x = 2,449.38

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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.