Home / 1,161.43-1,742.67-577.01

Finding the Fourth Proportional to 1,161.43, 1,742.67 and 577.01

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Solution

The fourth proportional to 1,161.43, 1,742.67 and 577.01 is: 865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.43 : 1,742.67 = 577.01 : x
  2. Step 2: Convert to fraction form
    1,161.43/1,742.67 = 577.01/x
  3. Step 3: Cross multiply
    1,161.43x = 1,742.67 × 577.01
  4. Step 4: Simplify right side
    1,161.43x = 1,005,535.13
  5. Step 5: Solve for x
    x = 1,005,535.13/1,161.43
  6. Step 6: Final answer
    x = 865.78

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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.