Home / 3,180.24-4,378.32-2,766.24

Finding the Fourth Proportional to 3,180.24, 4,378.32 and 2,766.24

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Solution

The fourth proportional to 3,180.24, 4,378.32 and 2,766.24 is: 3,808.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.24 : 4,378.32 = 2,766.24 : x
  2. Step 2: Convert to fraction form
    3,180.24/4,378.32 = 2,766.24/x
  3. Step 3: Cross multiply
    3,180.24x = 4,378.32 × 2,766.24
  4. Step 4: Simplify right side
    3,180.24x = 12,111,483.92
  5. Step 5: Solve for x
    x = 12,111,483.92/3,180.24
  6. Step 6: Final answer
    x = 3,808.36

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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.