Home / 1,919.95-2,649.42-1,175.14

Finding the Fourth Proportional to 1,919.95, 2,649.42 and 1,175.14

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Solution

The fourth proportional to 1,919.95, 2,649.42 and 1,175.14 is: 1,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.95 : 2,649.42 = 1,175.14 : x
  2. Step 2: Convert to fraction form
    1,919.95/2,649.42 = 1,175.14/x
  3. Step 3: Cross multiply
    1,919.95x = 2,649.42 × 1,175.14
  4. Step 4: Simplify right side
    1,919.95x = 3,113,439.42
  5. Step 5: Solve for x
    x = 3,113,439.42/1,919.95
  6. Step 6: Final answer
    x = 1,621.63

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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.