Home / 1,938.30-2,907.45-551.46

Finding the Fourth Proportional to 1,938.30, 2,907.45 and 551.46

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Solution

The fourth proportional to 1,938.30, 2,907.45 and 551.46 is: 827.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.30 : 2,907.45 = 551.46 : x
  2. Step 2: Convert to fraction form
    1,938.30/2,907.45 = 551.46/x
  3. Step 3: Cross multiply
    1,938.30x = 2,907.45 × 551.46
  4. Step 4: Simplify right side
    1,938.30x = 1,603,342.38
  5. Step 5: Solve for x
    x = 1,603,342.38/1,938.30
  6. Step 6: Final answer
    x = 827.19

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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.