Home / 1,212.11-1,819.08-888.32

Finding the Fourth Proportional to 1,212.11, 1,819.08 and 888.32

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Solution

The fourth proportional to 1,212.11, 1,819.08 and 888.32 is: 1,333.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.11 : 1,819.08 = 888.32 : x
  2. Step 2: Convert to fraction form
    1,212.11/1,819.08 = 888.32/x
  3. Step 3: Cross multiply
    1,212.11x = 1,819.08 × 888.32
  4. Step 4: Simplify right side
    1,212.11x = 1,615,925.15
  5. Step 5: Solve for x
    x = 1,615,925.15/1,212.11
  6. Step 6: Final answer
    x = 1,333.15

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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.