Home / 8,631.60-12,947.67-2,788.26

Finding the Fourth Proportional to 8,631.60, 12,947.67 and 2,788.26

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Solution

The fourth proportional to 8,631.60, 12,947.67 and 2,788.26 is: 4,182.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.60 : 12,947.67 = 2,788.26 : x
  2. Step 2: Convert to fraction form
    8,631.60/12,947.67 = 2,788.26/x
  3. Step 3: Cross multiply
    8,631.60x = 12,947.67 × 2,788.26
  4. Step 4: Simplify right side
    8,631.60x = 36,101,470.35
  5. Step 5: Solve for x
    x = 36,101,470.35/8,631.60
  6. Step 6: Final answer
    x = 4,182.48

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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.