Home / 2,821.20-4,232.81-1,261.07

Finding the Fourth Proportional to 2,821.20, 4,232.81 and 1,261.07

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Solution

The fourth proportional to 2,821.20, 4,232.81 and 1,261.07 is: 1,892.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.20 : 4,232.81 = 1,261.07 : x
  2. Step 2: Convert to fraction form
    2,821.20/4,232.81 = 1,261.07/x
  3. Step 3: Cross multiply
    2,821.20x = 4,232.81 × 1,261.07
  4. Step 4: Simplify right side
    2,821.20x = 5,337,852.82
  5. Step 5: Solve for x
    x = 5,337,852.82/2,821.20
  6. Step 6: Final answer
    x = 1,892.05

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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.