Home / 3,312.87-4,571.77-1,986.57

Finding the Fourth Proportional to 3,312.87, 4,571.77 and 1,986.57

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Solution

The fourth proportional to 3,312.87, 4,571.77 and 1,986.57 is: 2,741.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.87 : 4,571.77 = 1,986.57 : x
  2. Step 2: Convert to fraction form
    3,312.87/4,571.77 = 1,986.57/x
  3. Step 3: Cross multiply
    3,312.87x = 4,571.77 × 1,986.57
  4. Step 4: Simplify right side
    3,312.87x = 9,082,141.13
  5. Step 5: Solve for x
    x = 9,082,141.13/3,312.87
  6. Step 6: Final answer
    x = 2,741.47

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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.