Home / 3,179.19-4,387.20-1,762.85

Finding the Fourth Proportional to 3,179.19, 4,387.20 and 1,762.85

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Solution

The fourth proportional to 3,179.19, 4,387.20 and 1,762.85 is: 2,432.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.19 : 4,387.20 = 1,762.85 : x
  2. Step 2: Convert to fraction form
    3,179.19/4,387.20 = 1,762.85/x
  3. Step 3: Cross multiply
    3,179.19x = 4,387.20 × 1,762.85
  4. Step 4: Simplify right side
    3,179.19x = 7,733,975.52
  5. Step 5: Solve for x
    x = 7,733,975.52/3,179.19
  6. Step 6: Final answer
    x = 2,432.69

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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.