Home / 1,938.08-2,906.58-551.15

Finding the Fourth Proportional to 1,938.08, 2,906.58 and 551.15

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Solution

The fourth proportional to 1,938.08, 2,906.58 and 551.15 is: 826.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.08 : 2,906.58 = 551.15 : x
  2. Step 2: Convert to fraction form
    1,938.08/2,906.58 = 551.15/x
  3. Step 3: Cross multiply
    1,938.08x = 2,906.58 × 551.15
  4. Step 4: Simplify right side
    1,938.08x = 1,601,961.57
  5. Step 5: Solve for x
    x = 1,601,961.57/1,938.08
  6. Step 6: Final answer
    x = 826.57

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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.