Home / 2,228.31-3,075.29-1,296.75

Finding the Fourth Proportional to 2,228.31, 3,075.29 and 1,296.75

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Solution

The fourth proportional to 2,228.31, 3,075.29 and 1,296.75 is: 1,789.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.31 : 3,075.29 = 1,296.75 : x
  2. Step 2: Convert to fraction form
    2,228.31/3,075.29 = 1,296.75/x
  3. Step 3: Cross multiply
    2,228.31x = 3,075.29 × 1,296.75
  4. Step 4: Simplify right side
    2,228.31x = 3,987,875.82
  5. Step 5: Solve for x
    x = 3,987,875.82/2,228.31
  6. Step 6: Final answer
    x = 1,789.64

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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.