Home / 2,287.66-3,156.90-1,292.88

Finding the Fourth Proportional to 2,287.66, 3,156.90 and 1,292.88

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Solution

The fourth proportional to 2,287.66, 3,156.90 and 1,292.88 is: 1,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.66 : 3,156.90 = 1,292.88 : x
  2. Step 2: Convert to fraction form
    2,287.66/3,156.90 = 1,292.88/x
  3. Step 3: Cross multiply
    2,287.66x = 3,156.90 × 1,292.88
  4. Step 4: Simplify right side
    2,287.66x = 4,081,492.87
  5. Step 5: Solve for x
    x = 4,081,492.87/2,287.66
  6. Step 6: Final answer
    x = 1,784.13

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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.