Home / 1,338.12-2,005.56-608.04

Finding the Fourth Proportional to 1,338.12, 2,005.56 and 608.04

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Solution

The fourth proportional to 1,338.12, 2,005.56 and 608.04 is: 911.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.12 : 2,005.56 = 608.04 : x
  2. Step 2: Convert to fraction form
    1,338.12/2,005.56 = 608.04/x
  3. Step 3: Cross multiply
    1,338.12x = 2,005.56 × 608.04
  4. Step 4: Simplify right side
    1,338.12x = 1,219,460.70
  5. Step 5: Solve for x
    x = 1,219,460.70/1,338.12
  6. Step 6: Final answer
    x = 911.32

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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.