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Finding the Fourth Proportional to 8,360.70, 12,528.90 and 3,160.50

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Solution

The fourth proportional to 8,360.70, 12,528.90 and 3,160.50 is: 4,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360.70 : 12,528.90 = 3,160.50 : x
  2. Step 2: Convert to fraction form
    8,360.70/12,528.90 = 3,160.50/x
  3. Step 3: Cross multiply
    8,360.70x = 12,528.90 × 3,160.50
  4. Step 4: Simplify right side
    8,360.70x = 39,597,588.45
  5. Step 5: Solve for x
    x = 39,597,588.45/8,360.70
  6. Step 6: Final answer
    x = 4,736.16

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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.