Home / 2,600.24-3,900.40-1,213.19

Finding the Fourth Proportional to 2,600.24, 3,900.40 and 1,213.19

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Solution

The fourth proportional to 2,600.24, 3,900.40 and 1,213.19 is: 1,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.24 : 3,900.40 = 1,213.19 : x
  2. Step 2: Convert to fraction form
    2,600.24/3,900.40 = 1,213.19/x
  3. Step 3: Cross multiply
    2,600.24x = 3,900.40 × 1,213.19
  4. Step 4: Simplify right side
    2,600.24x = 4,731,947.13
  5. Step 5: Solve for x
    x = 4,731,947.13/2,600.24
  6. Step 6: Final answer
    x = 1,819.82

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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.