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Finding the Fourth Proportional to 7,908.01, 10,912.92 and 5,643.52

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Solution

The fourth proportional to 7,908.01, 10,912.92 and 5,643.52 is: 7,787.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.01 : 10,912.92 = 5,643.52 : x
  2. Step 2: Convert to fraction form
    7,908.01/10,912.92 = 5,643.52/x
  3. Step 3: Cross multiply
    7,908.01x = 10,912.92 × 5,643.52
  4. Step 4: Simplify right side
    7,908.01x = 61,587,282.28
  5. Step 5: Solve for x
    x = 61,587,282.28/7,908.01
  6. Step 6: Final answer
    x = 7,787.96

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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.