Home / 8,753.12-12,072.48-5,609.60

Finding the Fourth Proportional to 8,753.12, 12,072.48 and 5,609.60

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Solution

The fourth proportional to 8,753.12, 12,072.48 and 5,609.60 is: 7,736.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.12 : 12,072.48 = 5,609.60 : x
  2. Step 2: Convert to fraction form
    8,753.12/12,072.48 = 5,609.60/x
  3. Step 3: Cross multiply
    8,753.12x = 12,072.48 × 5,609.60
  4. Step 4: Simplify right side
    8,753.12x = 67,721,783.81
  5. Step 5: Solve for x
    x = 67,721,783.81/8,753.12
  6. Step 6: Final answer
    x = 7,736.87

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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.