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Finding the Fourth Proportional to 5,758.71, 8,639.82 and 2,987.37

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Solution

The fourth proportional to 5,758.71, 8,639.82 and 2,987.37 is: 4,481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,758.71 : 8,639.82 = 2,987.37 : x
  2. Step 2: Convert to fraction form
    5,758.71/8,639.82 = 2,987.37/x
  3. Step 3: Cross multiply
    5,758.71x = 8,639.82 × 2,987.37
  4. Step 4: Simplify right side
    5,758.71x = 25,810,339.07
  5. Step 5: Solve for x
    x = 25,810,339.07/5,758.71
  6. Step 6: Final answer
    x = 4,481.97

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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.