Home / 3,122.45-4,309.40-2,004.65

Finding the Fourth Proportional to 3,122.45, 4,309.40 and 2,004.65

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Solution

The fourth proportional to 3,122.45, 4,309.40 and 2,004.65 is: 2,766.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.45 : 4,309.40 = 2,004.65 : x
  2. Step 2: Convert to fraction form
    3,122.45/4,309.40 = 2,004.65/x
  3. Step 3: Cross multiply
    3,122.45x = 4,309.40 × 2,004.65
  4. Step 4: Simplify right side
    3,122.45x = 8,638,838.71
  5. Step 5: Solve for x
    x = 8,638,838.71/3,122.45
  6. Step 6: Final answer
    x = 2,766.69

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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.