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Finding the Fourth Proportional to 6,408.21, 8,836.50 and 5,061.45

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Solution

The fourth proportional to 6,408.21, 8,836.50 and 5,061.45 is: 6,979.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408.21 : 8,836.50 = 5,061.45 : x
  2. Step 2: Convert to fraction form
    6,408.21/8,836.50 = 5,061.45/x
  3. Step 3: Cross multiply
    6,408.21x = 8,836.50 × 5,061.45
  4. Step 4: Simplify right side
    6,408.21x = 44,725,502.93
  5. Step 5: Solve for x
    x = 44,725,502.93/6,408.21
  6. Step 6: Final answer
    x = 6,979.41

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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.