Home / 3,322.50-4,982.31-1,678.20

Finding the Fourth Proportional to 3,322.50, 4,982.31 and 1,678.20

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Solution

The fourth proportional to 3,322.50, 4,982.31 and 1,678.20 is: 2,516.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.50 : 4,982.31 = 1,678.20 : x
  2. Step 2: Convert to fraction form
    3,322.50/4,982.31 = 1,678.20/x
  3. Step 3: Cross multiply
    3,322.50x = 4,982.31 × 1,678.20
  4. Step 4: Simplify right side
    3,322.50x = 8,361,312.64
  5. Step 5: Solve for x
    x = 8,361,312.64/3,322.50
  6. Step 6: Final answer
    x = 2,516.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.