Home / 2,760.59-4,139.30-911.19

Finding the Fourth Proportional to 2,760.59, 4,139.30 and 911.19

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Solution

The fourth proportional to 2,760.59, 4,139.30 and 911.19 is: 1,366.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.59 : 4,139.30 = 911.19 : x
  2. Step 2: Convert to fraction form
    2,760.59/4,139.30 = 911.19/x
  3. Step 3: Cross multiply
    2,760.59x = 4,139.30 × 911.19
  4. Step 4: Simplify right side
    2,760.59x = 3,771,684.21
  5. Step 5: Solve for x
    x = 3,771,684.21/2,760.59
  6. Step 6: Final answer
    x = 1,366.26

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1.5x scale

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.