Home / 2,228.12-3,075.92-1,442.80

Finding the Fourth Proportional to 2,228.12, 3,075.92 and 1,442.80

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Solution

The fourth proportional to 2,228.12, 3,075.92 and 1,442.80 is: 1,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.12 : 3,075.92 = 1,442.80 : x
  2. Step 2: Convert to fraction form
    2,228.12/3,075.92 = 1,442.80/x
  3. Step 3: Cross multiply
    2,228.12x = 3,075.92 × 1,442.80
  4. Step 4: Simplify right side
    2,228.12x = 4,437,937.38
  5. Step 5: Solve for x
    x = 4,437,937.38/2,228.12
  6. Step 6: Final answer
    x = 1,991.79

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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.