Home / 1,632.88-2,449.58-811.20

Finding the Fourth Proportional to 1,632.88, 2,449.58 and 811.20

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Solution

The fourth proportional to 1,632.88, 2,449.58 and 811.20 is: 1,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,632.88 : 2,449.58 = 811.20 : x
  2. Step 2: Convert to fraction form
    1,632.88/2,449.58 = 811.20/x
  3. Step 3: Cross multiply
    1,632.88x = 2,449.58 × 811.20
  4. Step 4: Simplify right side
    1,632.88x = 1,987,099.30
  5. Step 5: Solve for x
    x = 1,987,099.30/1,632.88
  6. Step 6: Final answer
    x = 1,216.93

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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.