Home / 3,320.72-4,981.88-1,012.22

Finding the Fourth Proportional to 3,320.72, 4,981.88 and 1,012.22

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Solution

The fourth proportional to 3,320.72, 4,981.88 and 1,012.22 is: 1,518.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.72 : 4,981.88 = 1,012.22 : x
  2. Step 2: Convert to fraction form
    3,320.72/4,981.88 = 1,012.22/x
  3. Step 3: Cross multiply
    3,320.72x = 4,981.88 × 1,012.22
  4. Step 4: Simplify right side
    3,320.72x = 5,042,728.60
  5. Step 5: Solve for x
    x = 5,042,728.60/3,320.72
  6. Step 6: Final answer
    x = 1,518.57

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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.