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Finding the Fourth Proportional to 6,987.97, 9,643.44 and 3,844.18

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Solution

The fourth proportional to 6,987.97, 9,643.44 and 3,844.18 is: 5,304.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.97 : 9,643.44 = 3,844.18 : x
  2. Step 2: Convert to fraction form
    6,987.97/9,643.44 = 3,844.18/x
  3. Step 3: Cross multiply
    6,987.97x = 9,643.44 × 3,844.18
  4. Step 4: Simplify right side
    6,987.97x = 37,071,119.18
  5. Step 5: Solve for x
    x = 37,071,119.18/6,987.97
  6. Step 6: Final answer
    x = 5,304.99

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1.5x scale

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.