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Finding the Fourth Proportional to 6,987.63, 9,643.13 and 3,844.02

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Solution

The fourth proportional to 6,987.63, 9,643.13 and 3,844.02 is: 5,304.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.63 : 9,643.13 = 3,844.02 : x
  2. Step 2: Convert to fraction form
    6,987.63/9,643.13 = 3,844.02/x
  3. Step 3: Cross multiply
    6,987.63x = 9,643.13 × 3,844.02
  4. Step 4: Simplify right side
    6,987.63x = 37,068,384.58
  5. Step 5: Solve for x
    x = 37,068,384.58/6,987.63
  6. Step 6: Final answer
    x = 5,304.86

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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.