Home / 2,280.20-3,420.12-720.26

Finding the Fourth Proportional to 2,280.20, 3,420.12 and 720.26

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Solution

The fourth proportional to 2,280.20, 3,420.12 and 720.26 is: 1,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.20 : 3,420.12 = 720.26 : x
  2. Step 2: Convert to fraction form
    2,280.20/3,420.12 = 720.26/x
  3. Step 3: Cross multiply
    2,280.20x = 3,420.12 × 720.26
  4. Step 4: Simplify right side
    2,280.20x = 2,463,358.53
  5. Step 5: Solve for x
    x = 2,463,358.53/2,280.20
  6. Step 6: Final answer
    x = 1,080.33

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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.