Home / 3,312.80-4,571.76-1,986.56

Finding the Fourth Proportional to 3,312.80, 4,571.76 and 1,986.56

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Solution

The fourth proportional to 3,312.80, 4,571.76 and 1,986.56 is: 2,741.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.80 : 4,571.76 = 1,986.56 : x
  2. Step 2: Convert to fraction form
    3,312.80/4,571.76 = 1,986.56/x
  3. Step 3: Cross multiply
    3,312.80x = 4,571.76 × 1,986.56
  4. Step 4: Simplify right side
    3,312.80x = 9,082,075.55
  5. Step 5: Solve for x
    x = 9,082,075.55/3,312.80
  6. Step 6: Final answer
    x = 2,741.51

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1.5x scale

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.