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Finding the Fourth Proportional to 3,751.74, 5,626.53 and 1,286.55

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Solution

The fourth proportional to 3,751.74, 5,626.53 and 1,286.55 is: 1,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.74 : 5,626.53 = 1,286.55 : x
  2. Step 2: Convert to fraction form
    3,751.74/5,626.53 = 1,286.55/x
  3. Step 3: Cross multiply
    3,751.74x = 5,626.53 × 1,286.55
  4. Step 4: Simplify right side
    3,751.74x = 7,238,812.17
  5. Step 5: Solve for x
    x = 7,238,812.17/3,751.74
  6. Step 6: Final answer
    x = 1,929.45

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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.