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Finding the Fourth Proportional to 8,673.60, 11,967.48 and 5,137.68

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Solution

The fourth proportional to 8,673.60, 11,967.48 and 5,137.68 is: 7,088.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.60 : 11,967.48 = 5,137.68 : x
  2. Step 2: Convert to fraction form
    8,673.60/11,967.48 = 5,137.68/x
  3. Step 3: Cross multiply
    8,673.60x = 11,967.48 × 5,137.68
  4. Step 4: Simplify right side
    8,673.60x = 61,485,082.65
  5. Step 5: Solve for x
    x = 61,485,082.65/8,673.60
  6. Step 6: Final answer
    x = 7,088.76

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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.