Home / 1,938.38-2,907.59-477.53

Finding the Fourth Proportional to 1,938.38, 2,907.59 and 477.53

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Solution

The fourth proportional to 1,938.38, 2,907.59 and 477.53 is: 716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.38 : 2,907.59 = 477.53 : x
  2. Step 2: Convert to fraction form
    1,938.38/2,907.59 = 477.53/x
  3. Step 3: Cross multiply
    1,938.38x = 2,907.59 × 477.53
  4. Step 4: Simplify right side
    1,938.38x = 1,388,455.43
  5. Step 5: Solve for x
    x = 1,388,455.43/1,938.38
  6. Step 6: Final answer
    x = 716.30

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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.