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Finding the Fourth Proportional to 7,034.88, 9,708.06 and 3,891.06

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Solution

The fourth proportional to 7,034.88, 9,708.06 and 3,891.06 is: 5,369.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,034.88 : 9,708.06 = 3,891.06 : x
  2. Step 2: Convert to fraction form
    7,034.88/9,708.06 = 3,891.06/x
  3. Step 3: Cross multiply
    7,034.88x = 9,708.06 × 3,891.06
  4. Step 4: Simplify right side
    7,034.88x = 37,774,643.94
  5. Step 5: Solve for x
    x = 37,774,643.94/7,034.88
  6. Step 6: Final answer
    x = 5,369.62

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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.