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Finding the Fourth Proportional to 2,600.08, 3,900.45 and 957.77

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Solution

The fourth proportional to 2,600.08, 3,900.45 and 957.77 is: 1,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.08 : 3,900.45 = 957.77 : x
  2. Step 2: Convert to fraction form
    2,600.08/3,900.45 = 957.77/x
  3. Step 3: Cross multiply
    2,600.08x = 3,900.45 × 957.77
  4. Step 4: Simplify right side
    2,600.08x = 3,735,754.65
  5. Step 5: Solve for x
    x = 3,735,754.65/2,600.08
  6. Step 6: Final answer
    x = 1,436.78

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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.