Home / 1,352.41-2,028.85-427.95

Finding the Fourth Proportional to 1,352.41, 2,028.85 and 427.95

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Solution

The fourth proportional to 1,352.41, 2,028.85 and 427.95 is: 642.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.41 : 2,028.85 = 427.95 : x
  2. Step 2: Convert to fraction form
    1,352.41/2,028.85 = 427.95/x
  3. Step 3: Cross multiply
    1,352.41x = 2,028.85 × 427.95
  4. Step 4: Simplify right side
    1,352.41x = 868,250.36
  5. Step 5: Solve for x
    x = 868,250.36/1,352.41
  6. Step 6: Final answer
    x = 642.00

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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.