Home / 4,212.65-6,306.50-3,121.91

Finding the Fourth Proportional to 4,212.65, 6,306.50 and 3,121.91

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Solution

The fourth proportional to 4,212.65, 6,306.50 and 3,121.91 is: 4,673.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.65 : 6,306.50 = 3,121.91 : x
  2. Step 2: Convert to fraction form
    4,212.65/6,306.50 = 3,121.91/x
  3. Step 3: Cross multiply
    4,212.65x = 6,306.50 × 3,121.91
  4. Step 4: Simplify right side
    4,212.65x = 19,688,309.81
  5. Step 5: Solve for x
    x = 19,688,309.81/4,212.65
  6. Step 6: Final answer
    x = 4,673.62

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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.