Home / 3,216.64-4,439.76-1,820.20

Finding the Fourth Proportional to 3,216.64, 4,439.76 and 1,820.20

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Solution

The fourth proportional to 3,216.64, 4,439.76 and 1,820.20 is: 2,512.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.64 : 4,439.76 = 1,820.20 : x
  2. Step 2: Convert to fraction form
    3,216.64/4,439.76 = 1,820.20/x
  3. Step 3: Cross multiply
    3,216.64x = 4,439.76 × 1,820.20
  4. Step 4: Simplify right side
    3,216.64x = 8,081,251.15
  5. Step 5: Solve for x
    x = 8,081,251.15/3,216.64
  6. Step 6: Final answer
    x = 2,512.33

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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.