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Finding the Fourth Proportional to 3,842.60, 5,763.90 and 3,818.30

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Solution

The fourth proportional to 3,842.60, 5,763.90 and 3,818.30 is: 5,727.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.60 : 5,763.90 = 3,818.30 : x
  2. Step 2: Convert to fraction form
    3,842.60/5,763.90 = 3,818.30/x
  3. Step 3: Cross multiply
    3,842.60x = 5,763.90 × 3,818.30
  4. Step 4: Simplify right side
    3,842.60x = 22,008,299.37
  5. Step 5: Solve for x
    x = 22,008,299.37/3,842.60
  6. Step 6: Final answer
    x = 5,727.45

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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.