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Finding the Fourth Proportional to 6,451.36, 8,903 and 3,726.40

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Solution

The fourth proportional to 6,451.36, 8,903 and 3,726.40 is: 5,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,451.36 : 8,903 = 3,726.40 : x
  2. Step 2: Convert to fraction form
    6,451.36/8,903 = 3,726.40/x
  3. Step 3: Cross multiply
    6,451.36x = 8,903 × 3,726.40
  4. Step 4: Simplify right side
    6,451.36x = 33,176,139.20
  5. Step 5: Solve for x
    x = 33,176,139.20/6,451.36
  6. Step 6: Final answer
    x = 5,142.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.