Home / 2,276.87-3,142.07-1,282.15

Finding the Fourth Proportional to 2,276.87, 3,142.07 and 1,282.15

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Solution

The fourth proportional to 2,276.87, 3,142.07 and 1,282.15 is: 1,769.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.87 : 3,142.07 = 1,282.15 : x
  2. Step 2: Convert to fraction form
    2,276.87/3,142.07 = 1,282.15/x
  3. Step 3: Cross multiply
    2,276.87x = 3,142.07 × 1,282.15
  4. Step 4: Simplify right side
    2,276.87x = 4,028,600.40
  5. Step 5: Solve for x
    x = 4,028,600.40/2,276.87
  6. Step 6: Final answer
    x = 1,769.36

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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.