Home / 2,287.46-3,156.87-1,279.26

Finding the Fourth Proportional to 2,287.46, 3,156.87 and 1,279.26

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Solution

The fourth proportional to 2,287.46, 3,156.87 and 1,279.26 is: 1,765.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.46 : 3,156.87 = 1,279.26 : x
  2. Step 2: Convert to fraction form
    2,287.46/3,156.87 = 1,279.26/x
  3. Step 3: Cross multiply
    2,287.46x = 3,156.87 × 1,279.26
  4. Step 4: Simplify right side
    2,287.46x = 4,038,457.52
  5. Step 5: Solve for x
    x = 4,038,457.52/2,287.46
  6. Step 6: Final answer
    x = 1,765.48

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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.