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Finding the Fourth Proportional to 1,791, 2,684.58 and 750.74

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Solution

The fourth proportional to 1,791, 2,684.58 and 750.74 is: 1,125.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791 : 2,684.58 = 750.74 : x
  2. Step 2: Convert to fraction form
    1,791/2,684.58 = 750.74/x
  3. Step 3: Cross multiply
    1,791x = 2,684.58 × 750.74
  4. Step 4: Simplify right side
    1,791x = 2,015,421.59
  5. Step 5: Solve for x
    x = 2,015,421.59/1,791
  6. Step 6: Final answer
    x = 1,125.31

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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.