Home / 8,748.72-12,072.60-5,213.16

Finding the Fourth Proportional to 8,748.72, 12,072.60 and 5,213.16

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Solution

The fourth proportional to 8,748.72, 12,072.60 and 5,213.16 is: 7,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,748.72 : 12,072.60 = 5,213.16 : x
  2. Step 2: Convert to fraction form
    8,748.72/12,072.60 = 5,213.16/x
  3. Step 3: Cross multiply
    8,748.72x = 12,072.60 × 5,213.16
  4. Step 4: Simplify right side
    8,748.72x = 62,936,395.42
  5. Step 5: Solve for x
    x = 62,936,395.42/8,748.72
  6. Step 6: Final answer
    x = 7,193.78

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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.