Home / 8,631.18-12,947.51-3,699.65

Finding the Fourth Proportional to 8,631.18, 12,947.51 and 3,699.65

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Solution

The fourth proportional to 8,631.18, 12,947.51 and 3,699.65 is: 5,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.18 : 12,947.51 = 3,699.65 : x
  2. Step 2: Convert to fraction form
    8,631.18/12,947.51 = 3,699.65/x
  3. Step 3: Cross multiply
    8,631.18x = 12,947.51 × 3,699.65
  4. Step 4: Simplify right side
    8,631.18x = 47,901,255.37
  5. Step 5: Solve for x
    x = 47,901,255.37/8,631.18
  6. Step 6: Final answer
    x = 5,549.79

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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.