Home / 1,919.91-2,649.33-1,133.81

Finding the Fourth Proportional to 1,919.91, 2,649.33 and 1,133.81

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Solution

The fourth proportional to 1,919.91, 2,649.33 and 1,133.81 is: 1,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.91 : 2,649.33 = 1,133.81 : x
  2. Step 2: Convert to fraction form
    1,919.91/2,649.33 = 1,133.81/x
  3. Step 3: Cross multiply
    1,919.91x = 2,649.33 × 1,133.81
  4. Step 4: Simplify right side
    1,919.91x = 3,003,823.60
  5. Step 5: Solve for x
    x = 3,003,823.60/1,919.91
  6. Step 6: Final answer
    x = 1,564.56

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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.