Home / 8,313.65-12,475.45-3,315.14

Finding the Fourth Proportional to 8,313.65, 12,475.45 and 3,315.14

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Solution

The fourth proportional to 8,313.65, 12,475.45 and 3,315.14 is: 4,974.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.65 : 12,475.45 = 3,315.14 : x
  2. Step 2: Convert to fraction form
    8,313.65/12,475.45 = 3,315.14/x
  3. Step 3: Cross multiply
    8,313.65x = 12,475.45 × 3,315.14
  4. Step 4: Simplify right side
    8,313.65x = 41,357,863.31
  5. Step 5: Solve for x
    x = 41,357,863.31/8,313.65
  6. Step 6: Final answer
    x = 4,974.69

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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.