Home / 2,188.04-3,281.94-1,211.12

Finding the Fourth Proportional to 2,188.04, 3,281.94 and 1,211.12

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Solution

The fourth proportional to 2,188.04, 3,281.94 and 1,211.12 is: 1,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.04 : 3,281.94 = 1,211.12 : x
  2. Step 2: Convert to fraction form
    2,188.04/3,281.94 = 1,211.12/x
  3. Step 3: Cross multiply
    2,188.04x = 3,281.94 × 1,211.12
  4. Step 4: Simplify right side
    2,188.04x = 3,974,823.17
  5. Step 5: Solve for x
    x = 3,974,823.17/2,188.04
  6. Step 6: Final answer
    x = 1,816.61

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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.