Home / 2,609.12-3,914-1,069.92

Finding the Fourth Proportional to 2,609.12, 3,914 and 1,069.92

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Solution

The fourth proportional to 2,609.12, 3,914 and 1,069.92 is: 1,605.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.12 : 3,914 = 1,069.92 : x
  2. Step 2: Convert to fraction form
    2,609.12/3,914 = 1,069.92/x
  3. Step 3: Cross multiply
    2,609.12x = 3,914 × 1,069.92
  4. Step 4: Simplify right side
    2,609.12x = 4,187,666.88
  5. Step 5: Solve for x
    x = 4,187,666.88/2,609.12
  6. Step 6: Final answer
    x = 1,605.01

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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.