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Finding the Fourth Proportional to 7,911.91, 10,918.08 and 4,552.42

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Solution

The fourth proportional to 7,911.91, 10,918.08 and 4,552.42 is: 6,282.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.91 : 10,918.08 = 4,552.42 : x
  2. Step 2: Convert to fraction form
    7,911.91/10,918.08 = 4,552.42/x
  3. Step 3: Cross multiply
    7,911.91x = 10,918.08 × 4,552.42
  4. Step 4: Simplify right side
    7,911.91x = 49,703,685.75
  5. Step 5: Solve for x
    x = 49,703,685.75/7,911.91
  6. Step 6: Final answer
    x = 6,282.13

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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.