Home / 1,383.66-2,073.32-869.58

Finding the Fourth Proportional to 1,383.66, 2,073.32 and 869.58

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Solution

The fourth proportional to 1,383.66, 2,073.32 and 869.58 is: 1,303.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.66 : 2,073.32 = 869.58 : x
  2. Step 2: Convert to fraction form
    1,383.66/2,073.32 = 869.58/x
  3. Step 3: Cross multiply
    1,383.66x = 2,073.32 × 869.58
  4. Step 4: Simplify right side
    1,383.66x = 1,802,919.78
  5. Step 5: Solve for x
    x = 1,802,919.78/1,383.66
  6. Step 6: Final answer
    x = 1,303.01

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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.