Home / 2,910.28-4,015-1,790.88

Finding the Fourth Proportional to 2,910.28, 4,015 and 1,790.88

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Solution

The fourth proportional to 2,910.28, 4,015 and 1,790.88 is: 2,470.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.28 : 4,015 = 1,790.88 : x
  2. Step 2: Convert to fraction form
    2,910.28/4,015 = 1,790.88/x
  3. Step 3: Cross multiply
    2,910.28x = 4,015 × 1,790.88
  4. Step 4: Simplify right side
    2,910.28x = 7,190,383.20
  5. Step 5: Solve for x
    x = 7,190,383.20/2,910.28
  6. Step 6: Final answer
    x = 2,470.68

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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.