Home / 2,772.26-4,158.40-720.26

Finding the Fourth Proportional to 2,772.26, 4,158.40 and 720.26

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Solution

The fourth proportional to 2,772.26, 4,158.40 and 720.26 is: 1,080.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.26 : 4,158.40 = 720.26 : x
  2. Step 2: Convert to fraction form
    2,772.26/4,158.40 = 720.26/x
  3. Step 3: Cross multiply
    2,772.26x = 4,158.40 × 720.26
  4. Step 4: Simplify right side
    2,772.26x = 2,995,129.18
  5. Step 5: Solve for x
    x = 2,995,129.18/2,772.26
  6. Step 6: Final answer
    x = 1,080.39

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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.