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Finding the Fourth Proportional to 3,800.40, 5,700.38 and 1,026.86

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Solution

The fourth proportional to 3,800.40, 5,700.38 and 1,026.86 is: 1,540.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,800.40 : 5,700.38 = 1,026.86 : x
  2. Step 2: Convert to fraction form
    3,800.40/5,700.38 = 1,026.86/x
  3. Step 3: Cross multiply
    3,800.40x = 5,700.38 × 1,026.86
  4. Step 4: Simplify right side
    3,800.40x = 5,853,509.02
  5. Step 5: Solve for x
    x = 5,853,509.02/3,800.40
  6. Step 6: Final answer
    x = 1,540.23

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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.