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Finding the Fourth Proportional to 3,761.40, 5,643.45 and 3,626.40

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Solution

The fourth proportional to 3,761.40, 5,643.45 and 3,626.40 is: 5,440.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.40 : 5,643.45 = 3,626.40 : x
  2. Step 2: Convert to fraction form
    3,761.40/5,643.45 = 3,626.40/x
  3. Step 3: Cross multiply
    3,761.40x = 5,643.45 × 3,626.40
  4. Step 4: Simplify right side
    3,761.40x = 20,465,407.08
  5. Step 5: Solve for x
    x = 20,465,407.08/3,761.40
  6. Step 6: Final answer
    x = 5,440.90

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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.