Home / 2,287.16-3,156-1,292.30

Finding the Fourth Proportional to 2,287.16, 3,156 and 1,292.30

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Solution

The fourth proportional to 2,287.16, 3,156 and 1,292.30 is: 1,783.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.16 : 3,156 = 1,292.30 : x
  2. Step 2: Convert to fraction form
    2,287.16/3,156 = 1,292.30/x
  3. Step 3: Cross multiply
    2,287.16x = 3,156 × 1,292.30
  4. Step 4: Simplify right side
    2,287.16x = 4,078,498.80
  5. Step 5: Solve for x
    x = 4,078,498.80/2,287.16
  6. Step 6: Final answer
    x = 1,783.22

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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.