Home / 2,228.57-3,075.60-1,284.45

Finding the Fourth Proportional to 2,228.57, 3,075.60 and 1,284.45

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Solution

The fourth proportional to 2,228.57, 3,075.60 and 1,284.45 is: 1,772.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.57 : 3,075.60 = 1,284.45 : x
  2. Step 2: Convert to fraction form
    2,228.57/3,075.60 = 1,284.45/x
  3. Step 3: Cross multiply
    2,228.57x = 3,075.60 × 1,284.45
  4. Step 4: Simplify right side
    2,228.57x = 3,950,454.42
  5. Step 5: Solve for x
    x = 3,950,454.42/2,228.57
  6. Step 6: Final answer
    x = 1,772.64

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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.