Home / 5,488.31-8,232.59-1,978.61

Finding the Fourth Proportional to 5,488.31, 8,232.59 and 1,978.61

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Solution

The fourth proportional to 5,488.31, 8,232.59 and 1,978.61 is: 2,967.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,488.31 : 8,232.59 = 1,978.61 : x
  2. Step 2: Convert to fraction form
    5,488.31/8,232.59 = 1,978.61/x
  3. Step 3: Cross multiply
    5,488.31x = 8,232.59 × 1,978.61
  4. Step 4: Simplify right side
    5,488.31x = 16,289,048.68
  5. Step 5: Solve for x
    x = 16,289,048.68/5,488.31
  6. Step 6: Final answer
    x = 2,967.95

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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.