Home / 2,019.20-2,786.45-1,135.06

Finding the Fourth Proportional to 2,019.20, 2,786.45 and 1,135.06

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Solution

The fourth proportional to 2,019.20, 2,786.45 and 1,135.06 is: 1,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.20 : 2,786.45 = 1,135.06 : x
  2. Step 2: Convert to fraction form
    2,019.20/2,786.45 = 1,135.06/x
  3. Step 3: Cross multiply
    2,019.20x = 2,786.45 × 1,135.06
  4. Step 4: Simplify right side
    2,019.20x = 3,162,797.35
  5. Step 5: Solve for x
    x = 3,162,797.35/2,019.20
  6. Step 6: Final answer
    x = 1,566.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.