Home / 2,600.21-3,901.68-1,139.01

Finding the Fourth Proportional to 2,600.21, 3,901.68 and 1,139.01

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Solution

The fourth proportional to 2,600.21, 3,901.68 and 1,139.01 is: 1,709.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.21 : 3,901.68 = 1,139.01 : x
  2. Step 2: Convert to fraction form
    2,600.21/3,901.68 = 1,139.01/x
  3. Step 3: Cross multiply
    2,600.21x = 3,901.68 × 1,139.01
  4. Step 4: Simplify right side
    2,600.21x = 4,444,052.54
  5. Step 5: Solve for x
    x = 4,444,052.54/2,600.21
  6. Step 6: Final answer
    x = 1,709.12

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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.