Home / 2,609.30-3,600.78-1,561.70

Finding the Fourth Proportional to 2,609.30, 3,600.78 and 1,561.70

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Solution

The fourth proportional to 2,609.30, 3,600.78 and 1,561.70 is: 2,155.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.30 : 3,600.78 = 1,561.70 : x
  2. Step 2: Convert to fraction form
    2,609.30/3,600.78 = 1,561.70/x
  3. Step 3: Cross multiply
    2,609.30x = 3,600.78 × 1,561.70
  4. Step 4: Simplify right side
    2,609.30x = 5,623,338.13
  5. Step 5: Solve for x
    x = 5,623,338.13/2,609.30
  6. Step 6: Final answer
    x = 2,155.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.