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Finding the Fourth Proportional to 8,325.40, 12,493.05 and 4,429.84

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Solution

The fourth proportional to 8,325.40, 12,493.05 and 4,429.84 is: 6,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.40 : 12,493.05 = 4,429.84 : x
  2. Step 2: Convert to fraction form
    8,325.40/12,493.05 = 4,429.84/x
  3. Step 3: Cross multiply
    8,325.40x = 12,493.05 × 4,429.84
  4. Step 4: Simplify right side
    8,325.40x = 55,342,212.61
  5. Step 5: Solve for x
    x = 55,342,212.61/8,325.40
  6. Step 6: Final answer
    x = 6,647.39

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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.