Home / 1,161.95-1,741.80-511.88

Finding the Fourth Proportional to 1,161.95, 1,741.80 and 511.88

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Solution

The fourth proportional to 1,161.95, 1,741.80 and 511.88 is: 767.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.95 : 1,741.80 = 511.88 : x
  2. Step 2: Convert to fraction form
    1,161.95/1,741.80 = 511.88/x
  3. Step 3: Cross multiply
    1,161.95x = 1,741.80 × 511.88
  4. Step 4: Simplify right side
    1,161.95x = 891,592.58
  5. Step 5: Solve for x
    x = 891,592.58/1,161.95
  6. Step 6: Final answer
    x = 767.32

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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.