Home / 1,919.93-2,649.34-1,080.46

Finding the Fourth Proportional to 1,919.93, 2,649.34 and 1,080.46

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Solution

The fourth proportional to 1,919.93, 2,649.34 and 1,080.46 is: 1,490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.93 : 2,649.34 = 1,080.46 : x
  2. Step 2: Convert to fraction form
    1,919.93/2,649.34 = 1,080.46/x
  3. Step 3: Cross multiply
    1,919.93x = 2,649.34 × 1,080.46
  4. Step 4: Simplify right side
    1,919.93x = 2,862,505.90
  5. Step 5: Solve for x
    x = 2,862,505.90/1,919.93
  6. Step 6: Final answer
    x = 1,490.94

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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.