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Finding the Fourth Proportional to 4,900.97, 7,351.39 and 1,780.95

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Solution

The fourth proportional to 4,900.97, 7,351.39 and 1,780.95 is: 2,671.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.97 : 7,351.39 = 1,780.95 : x
  2. Step 2: Convert to fraction form
    4,900.97/7,351.39 = 1,780.95/x
  3. Step 3: Cross multiply
    4,900.97x = 7,351.39 × 1,780.95
  4. Step 4: Simplify right side
    4,900.97x = 13,092,487.81
  5. Step 5: Solve for x
    x = 13,092,487.81/4,900.97
  6. Step 6: Final answer
    x = 2,671.41

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1.5x scale

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.