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Finding the Fourth Proportional to 6,643.04, 9,963.78 and 1,712.72

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Solution

The fourth proportional to 6,643.04, 9,963.78 and 1,712.72 is: 2,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643.04 : 9,963.78 = 1,712.72 : x
  2. Step 2: Convert to fraction form
    6,643.04/9,963.78 = 1,712.72/x
  3. Step 3: Cross multiply
    6,643.04x = 9,963.78 × 1,712.72
  4. Step 4: Simplify right side
    6,643.04x = 17,065,165.28
  5. Step 5: Solve for x
    x = 17,065,165.28/6,643.04
  6. Step 6: Final answer
    x = 2,568.88

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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.