Home / 1,938.41-2,907.63-477.57

Finding the Fourth Proportional to 1,938.41, 2,907.63 and 477.57

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Solution

The fourth proportional to 1,938.41, 2,907.63 and 477.57 is: 716.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.41 : 2,907.63 = 477.57 : x
  2. Step 2: Convert to fraction form
    1,938.41/2,907.63 = 477.57/x
  3. Step 3: Cross multiply
    1,938.41x = 2,907.63 × 477.57
  4. Step 4: Simplify right side
    1,938.41x = 1,388,596.86
  5. Step 5: Solve for x
    x = 1,388,596.86/1,938.41
  6. Step 6: Final answer
    x = 716.36

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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.