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Finding the Fourth Proportional to 7,191.61, 10,787.43 and 2,511.59

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Solution

The fourth proportional to 7,191.61, 10,787.43 and 2,511.59 is: 3,767.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.61 : 10,787.43 = 2,511.59 : x
  2. Step 2: Convert to fraction form
    7,191.61/10,787.43 = 2,511.59/x
  3. Step 3: Cross multiply
    7,191.61x = 10,787.43 × 2,511.59
  4. Step 4: Simplify right side
    7,191.61x = 27,093,556.79
  5. Step 5: Solve for x
    x = 27,093,556.79/7,191.61
  6. Step 6: Final answer
    x = 3,767.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.