Home / 3,981.04-5,493.48-2,188.22

Finding the Fourth Proportional to 3,981.04, 5,493.48 and 2,188.22

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Solution

The fourth proportional to 3,981.04, 5,493.48 and 2,188.22 is: 3,019.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.04 : 5,493.48 = 2,188.22 : x
  2. Step 2: Convert to fraction form
    3,981.04/5,493.48 = 2,188.22/x
  3. Step 3: Cross multiply
    3,981.04x = 5,493.48 × 2,188.22
  4. Step 4: Simplify right side
    3,981.04x = 12,020,942.81
  5. Step 5: Solve for x
    x = 12,020,942.81/3,981.04
  6. Step 6: Final answer
    x = 3,019.55

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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.