Home / 2,287.11-3,156.20-1,292.37

Finding the Fourth Proportional to 2,287.11, 3,156.20 and 1,292.37

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Solution

The fourth proportional to 2,287.11, 3,156.20 and 1,292.37 is: 1,783.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.11 : 3,156.20 = 1,292.37 : x
  2. Step 2: Convert to fraction form
    2,287.11/3,156.20 = 1,292.37/x
  3. Step 3: Cross multiply
    2,287.11x = 3,156.20 × 1,292.37
  4. Step 4: Simplify right side
    2,287.11x = 4,078,971.73
  5. Step 5: Solve for x
    x = 4,078,971.73/2,287.11
  6. Step 6: Final answer
    x = 1,783.46

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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.