Home / 9,319.56-12,861.24-5,128.08

Finding the Fourth Proportional to 9,319.56, 12,861.24 and 5,128.08

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Solution

The fourth proportional to 9,319.56, 12,861.24 and 5,128.08 is: 7,076.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.56 : 12,861.24 = 5,128.08 : x
  2. Step 2: Convert to fraction form
    9,319.56/12,861.24 = 5,128.08/x
  3. Step 3: Cross multiply
    9,319.56x = 12,861.24 × 5,128.08
  4. Step 4: Simplify right side
    9,319.56x = 65,953,467.62
  5. Step 5: Solve for x
    x = 65,953,467.62/9,319.56
  6. Step 6: Final answer
    x = 7,076.89

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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.