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Finding the Fourth Proportional to 8,617.05, 11,892.63 and 5,259.15

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Solution

The fourth proportional to 8,617.05, 11,892.63 and 5,259.15 is: 7,258.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.05 : 11,892.63 = 5,259.15 : x
  2. Step 2: Convert to fraction form
    8,617.05/11,892.63 = 5,259.15/x
  3. Step 3: Cross multiply
    8,617.05x = 11,892.63 × 5,259.15
  4. Step 4: Simplify right side
    8,617.05x = 62,545,125.06
  5. Step 5: Solve for x
    x = 62,545,125.06/8,617.05
  6. Step 6: Final answer
    x = 7,258.30

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Double scale
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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.