Home / 1,919.03-2,875.66-1,139.18

Finding the Fourth Proportional to 1,919.03, 2,875.66 and 1,139.18

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Solution

The fourth proportional to 1,919.03, 2,875.66 and 1,139.18 is: 1,707.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.03 : 2,875.66 = 1,139.18 : x
  2. Step 2: Convert to fraction form
    1,919.03/2,875.66 = 1,139.18/x
  3. Step 3: Cross multiply
    1,919.03x = 2,875.66 × 1,139.18
  4. Step 4: Simplify right side
    1,919.03x = 3,275,877.13
  5. Step 5: Solve for x
    x = 3,275,877.13/1,919.03
  6. Step 6: Final answer
    x = 1,707.05

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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.