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Finding the Fourth Proportional to 5,028, 7,542 and 1,380

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Solution

The fourth proportional to 5,028, 7,542 and 1,380 is: 2,070

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028 : 7,542 = 1,380 : x
  2. Step 2: Convert to fraction form
    5,028/7,542 = 1,380/x
  3. Step 3: Cross multiply
    5,028x = 7,542 × 1,380
  4. Step 4: Simplify right side
    5,028x = 10,407,960
  5. Step 5: Solve for x
    x = 10,407,960/5,028
  6. Step 6: Final answer
    x = 2,070

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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.