Home / 2,861.20-4,291.35-1,107.02

Finding the Fourth Proportional to 2,861.20, 4,291.35 and 1,107.02

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Solution

The fourth proportional to 2,861.20, 4,291.35 and 1,107.02 is: 1,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.20 : 4,291.35 = 1,107.02 : x
  2. Step 2: Convert to fraction form
    2,861.20/4,291.35 = 1,107.02/x
  3. Step 3: Cross multiply
    2,861.20x = 4,291.35 × 1,107.02
  4. Step 4: Simplify right side
    2,861.20x = 4,750,598.94
  5. Step 5: Solve for x
    x = 4,750,598.94/2,861.20
  6. Step 6: Final answer
    x = 1,660.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.