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Finding the Fourth Proportional to 1,480.40, 2,028.12 and 1,425

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Solution

The fourth proportional to 1,480.40, 2,028.12 and 1,425 is: 1,952.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.40 : 2,028.12 = 1,425 : x
  2. Step 2: Convert to fraction form
    1,480.40/2,028.12 = 1,425/x
  3. Step 3: Cross multiply
    1,480.40x = 2,028.12 × 1,425
  4. Step 4: Simplify right side
    1,480.40x = 2,890,071
  5. Step 5: Solve for x
    x = 2,890,071/1,480.40
  6. Step 6: Final answer
    x = 1,952.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.