Home / 3,122.96-4,309.62-1,706.65

Finding the Fourth Proportional to 3,122.96, 4,309.62 and 1,706.65

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Solution

The fourth proportional to 3,122.96, 4,309.62 and 1,706.65 is: 2,355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.96 : 4,309.62 = 1,706.65 : x
  2. Step 2: Convert to fraction form
    3,122.96/4,309.62 = 1,706.65/x
  3. Step 3: Cross multiply
    3,122.96x = 4,309.62 × 1,706.65
  4. Step 4: Simplify right side
    3,122.96x = 7,355,020.04
  5. Step 5: Solve for x
    x = 7,355,020.04/3,122.96
  6. Step 6: Final answer
    x = 2,355.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.