Home / 2,286.88-3,156.36-1,292.20

Finding the Fourth Proportional to 2,286.88, 3,156.36 and 1,292.20

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Solution

The fourth proportional to 2,286.88, 3,156.36 and 1,292.20 is: 1,783.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.88 : 3,156.36 = 1,292.20 : x
  2. Step 2: Convert to fraction form
    2,286.88/3,156.36 = 1,292.20/x
  3. Step 3: Cross multiply
    2,286.88x = 3,156.36 × 1,292.20
  4. Step 4: Simplify right side
    2,286.88x = 4,078,648.39
  5. Step 5: Solve for x
    x = 4,078,648.39/2,286.88
  6. Step 6: Final answer
    x = 1,783.50

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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.