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Finding the Fourth Proportional to 8,360.40, 12,540.84 and 7,398.48

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Solution

The fourth proportional to 8,360.40, 12,540.84 and 7,398.48 is: 11,097.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360.40 : 12,540.84 = 7,398.48 : x
  2. Step 2: Convert to fraction form
    8,360.40/12,540.84 = 7,398.48/x
  3. Step 3: Cross multiply
    8,360.40x = 12,540.84 × 7,398.48
  4. Step 4: Simplify right side
    8,360.40x = 92,783,153.92
  5. Step 5: Solve for x
    x = 92,783,153.92/8,360.40
  6. Step 6: Final answer
    x = 11,097.93

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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.