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Finding the Fourth Proportional to 2,600.64, 3,900.96 and 2,061.18

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Solution

The fourth proportional to 2,600.64, 3,900.96 and 2,061.18 is: 3,091.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.64 : 3,900.96 = 2,061.18 : x
  2. Step 2: Convert to fraction form
    2,600.64/3,900.96 = 2,061.18/x
  3. Step 3: Cross multiply
    2,600.64x = 3,900.96 × 2,061.18
  4. Step 4: Simplify right side
    2,600.64x = 8,040,580.73
  5. Step 5: Solve for x
    x = 8,040,580.73/2,600.64
  6. Step 6: Final answer
    x = 3,091.77

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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.