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Finding the Fourth Proportional to 3,741.50, 5,612.97 and 1,689.50

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Solution

The fourth proportional to 3,741.50, 5,612.97 and 1,689.50 is: 2,534.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,741.50 : 5,612.97 = 1,689.50 : x
  2. Step 2: Convert to fraction form
    3,741.50/5,612.97 = 1,689.50/x
  3. Step 3: Cross multiply
    3,741.50x = 5,612.97 × 1,689.50
  4. Step 4: Simplify right side
    3,741.50x = 9,483,112.82
  5. Step 5: Solve for x
    x = 9,483,112.82/3,741.50
  6. Step 6: Final answer
    x = 2,534.58

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1.5x scale

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.