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Finding the Fourth Proportional to 5,787.18, 8,691.37 and 5,299.21

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Solution

The fourth proportional to 5,787.18, 8,691.37 and 5,299.21 is: 7,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.18 : 8,691.37 = 5,299.21 : x
  2. Step 2: Convert to fraction form
    5,787.18/8,691.37 = 5,299.21/x
  3. Step 3: Cross multiply
    5,787.18x = 8,691.37 × 5,299.21
  4. Step 4: Simplify right side
    5,787.18x = 46,057,394.82
  5. Step 5: Solve for x
    x = 46,057,394.82/5,787.18
  6. Step 6: Final answer
    x = 7,958.52

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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.