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Finding the Fourth Proportional to 1,955, 2,932.62 and 722.52

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Solution

The fourth proportional to 1,955, 2,932.62 and 722.52 is: 1,083.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955 : 2,932.62 = 722.52 : x
  2. Step 2: Convert to fraction form
    1,955/2,932.62 = 722.52/x
  3. Step 3: Cross multiply
    1,955x = 2,932.62 × 722.52
  4. Step 4: Simplify right side
    1,955x = 2,118,876.60
  5. Step 5: Solve for x
    x = 2,118,876.60/1,955
  6. Step 6: Final answer
    x = 1,083.82

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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.