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Finding the Fourth Proportional to 2,600.73, 3,900.80 and 652.79

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Solution

The fourth proportional to 2,600.73, 3,900.80 and 652.79 is: 979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.73 : 3,900.80 = 652.79 : x
  2. Step 2: Convert to fraction form
    2,600.73/3,900.80 = 652.79/x
  3. Step 3: Cross multiply
    2,600.73x = 3,900.80 × 652.79
  4. Step 4: Simplify right side
    2,600.73x = 2,546,380.46
  5. Step 5: Solve for x
    x = 2,546,380.46/2,600.73
  6. Step 6: Final answer
    x = 979.10

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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.