Home / 2,150.80-3,226.19-1,420.20

Finding the Fourth Proportional to 2,150.80, 3,226.19 and 1,420.20

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Solution

The fourth proportional to 2,150.80, 3,226.19 and 1,420.20 is: 2,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.80 : 3,226.19 = 1,420.20 : x
  2. Step 2: Convert to fraction form
    2,150.80/3,226.19 = 1,420.20/x
  3. Step 3: Cross multiply
    2,150.80x = 3,226.19 × 1,420.20
  4. Step 4: Simplify right side
    2,150.80x = 4,581,835.04
  5. Step 5: Solve for x
    x = 4,581,835.04/2,150.80
  6. Step 6: Final answer
    x = 2,130.29

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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.