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Finding the Fourth Proportional to 7,959.97, 10,985.07 and 5,447.35

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Solution

The fourth proportional to 7,959.97, 10,985.07 and 5,447.35 is: 7,517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.97 : 10,985.07 = 5,447.35 : x
  2. Step 2: Convert to fraction form
    7,959.97/10,985.07 = 5,447.35/x
  3. Step 3: Cross multiply
    7,959.97x = 10,985.07 × 5,447.35
  4. Step 4: Simplify right side
    7,959.97x = 59,839,521.06
  5. Step 5: Solve for x
    x = 59,839,521.06/7,959.97
  6. Step 6: Final answer
    x = 7,517.56

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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.