Home / 1,919.88-2,649.56-1,080.66

Finding the Fourth Proportional to 1,919.88, 2,649.56 and 1,080.66

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Solution

The fourth proportional to 1,919.88, 2,649.56 and 1,080.66 is: 1,491.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.88 : 2,649.56 = 1,080.66 : x
  2. Step 2: Convert to fraction form
    1,919.88/2,649.56 = 1,080.66/x
  3. Step 3: Cross multiply
    1,919.88x = 2,649.56 × 1,080.66
  4. Step 4: Simplify right side
    1,919.88x = 2,863,268.11
  5. Step 5: Solve for x
    x = 2,863,268.11/1,919.88
  6. Step 6: Final answer
    x = 1,491.38

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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.