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Finding the Fourth Proportional to 8,375.40, 12,563.10 and 7,403.40

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Solution

The fourth proportional to 8,375.40, 12,563.10 and 7,403.40 is: 11,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375.40 : 12,563.10 = 7,403.40 : x
  2. Step 2: Convert to fraction form
    8,375.40/12,563.10 = 7,403.40/x
  3. Step 3: Cross multiply
    8,375.40x = 12,563.10 × 7,403.40
  4. Step 4: Simplify right side
    8,375.40x = 93,009,654.54
  5. Step 5: Solve for x
    x = 93,009,654.54/8,375.40
  6. Step 6: Final answer
    x = 11,105.10

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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.