Home / 2,578.05-3,866.40-1,756.17

Finding the Fourth Proportional to 2,578.05, 3,866.40 and 1,756.17

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Solution

The fourth proportional to 2,578.05, 3,866.40 and 1,756.17 is: 2,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.05 : 3,866.40 = 1,756.17 : x
  2. Step 2: Convert to fraction form
    2,578.05/3,866.40 = 1,756.17/x
  3. Step 3: Cross multiply
    2,578.05x = 3,866.40 × 1,756.17
  4. Step 4: Simplify right side
    2,578.05x = 6,790,055.69
  5. Step 5: Solve for x
    x = 6,790,055.69/2,578.05
  6. Step 6: Final answer
    x = 2,633.80

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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.