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Finding the Fourth Proportional to 7,952.79, 10,964.52 and 5,115.09

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Solution

The fourth proportional to 7,952.79, 10,964.52 and 5,115.09 is: 7,052.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,952.79 : 10,964.52 = 5,115.09 : x
  2. Step 2: Convert to fraction form
    7,952.79/10,964.52 = 5,115.09/x
  3. Step 3: Cross multiply
    7,952.79x = 10,964.52 × 5,115.09
  4. Step 4: Simplify right side
    7,952.79x = 56,084,506.61
  5. Step 5: Solve for x
    x = 56,084,506.61/7,952.79
  6. Step 6: Final answer
    x = 7,052.18

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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.