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Finding the Fourth Proportional to 7,107.56, 9,808.92 and 3,963.74

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Solution

The fourth proportional to 7,107.56, 9,808.92 and 3,963.74 is: 5,470.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.56 : 9,808.92 = 3,963.74 : x
  2. Step 2: Convert to fraction form
    7,107.56/9,808.92 = 3,963.74/x
  3. Step 3: Cross multiply
    7,107.56x = 9,808.92 × 3,963.74
  4. Step 4: Simplify right side
    7,107.56x = 38,880,033.08
  5. Step 5: Solve for x
    x = 38,880,033.08/7,107.56
  6. Step 6: Final answer
    x = 5,470.24

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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.