Home / 1,119.17-1,544.27-872.35

Finding the Fourth Proportional to 1,119.17, 1,544.27 and 872.35

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Solution

The fourth proportional to 1,119.17, 1,544.27 and 872.35 is: 1,203.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.17 : 1,544.27 = 872.35 : x
  2. Step 2: Convert to fraction form
    1,119.17/1,544.27 = 872.35/x
  3. Step 3: Cross multiply
    1,119.17x = 1,544.27 × 872.35
  4. Step 4: Simplify right side
    1,119.17x = 1,347,135.71
  5. Step 5: Solve for x
    x = 1,347,135.71/1,119.17
  6. Step 6: Final answer
    x = 1,203.69

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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.