Home / 2,187.16-3,281.36-1,213.94

Finding the Fourth Proportional to 2,187.16, 3,281.36 and 1,213.94

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Solution

The fourth proportional to 2,187.16, 3,281.36 and 1,213.94 is: 1,821.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.16 : 3,281.36 = 1,213.94 : x
  2. Step 2: Convert to fraction form
    2,187.16/3,281.36 = 1,213.94/x
  3. Step 3: Cross multiply
    2,187.16x = 3,281.36 × 1,213.94
  4. Step 4: Simplify right side
    2,187.16x = 3,983,376.29
  5. Step 5: Solve for x
    x = 3,983,376.29/2,187.16
  6. Step 6: Final answer
    x = 1,821.26

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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.