Home / 2,276.14-3,143.13-1,438.33

Finding the Fourth Proportional to 2,276.14, 3,143.13 and 1,438.33

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Solution

The fourth proportional to 2,276.14, 3,143.13 and 1,438.33 is: 1,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.14 : 3,143.13 = 1,438.33 : x
  2. Step 2: Convert to fraction form
    2,276.14/3,143.13 = 1,438.33/x
  3. Step 3: Cross multiply
    2,276.14x = 3,143.13 × 1,438.33
  4. Step 4: Simplify right side
    2,276.14x = 4,520,858.17
  5. Step 5: Solve for x
    x = 4,520,858.17/2,276.14
  6. Step 6: Final answer
    x = 1,986.20

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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.