Home / 3,229.68-4,455.96-1,970.16

Finding the Fourth Proportional to 3,229.68, 4,455.96 and 1,970.16

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Solution

The fourth proportional to 3,229.68, 4,455.96 and 1,970.16 is: 2,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.68 : 4,455.96 = 1,970.16 : x
  2. Step 2: Convert to fraction form
    3,229.68/4,455.96 = 1,970.16/x
  3. Step 3: Cross multiply
    3,229.68x = 4,455.96 × 1,970.16
  4. Step 4: Simplify right side
    3,229.68x = 8,778,954.15
  5. Step 5: Solve for x
    x = 8,778,954.15/3,229.68
  6. Step 6: Final answer
    x = 2,718.21

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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.