Home / 2,138.31-3,207.50-904.95

Finding the Fourth Proportional to 2,138.31, 3,207.50 and 904.95

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Solution

The fourth proportional to 2,138.31, 3,207.50 and 904.95 is: 1,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.31 : 3,207.50 = 904.95 : x
  2. Step 2: Convert to fraction form
    2,138.31/3,207.50 = 904.95/x
  3. Step 3: Cross multiply
    2,138.31x = 3,207.50 × 904.95
  4. Step 4: Simplify right side
    2,138.31x = 2,902,622.60
  5. Step 5: Solve for x
    x = 2,902,622.60/2,138.31
  6. Step 6: Final answer
    x = 1,357.44

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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.