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Finding the Fourth Proportional to 8,739.36, 13,158.32 and 7,706.04

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Solution

The fourth proportional to 8,739.36, 13,158.32 and 7,706.04 is: 11,602.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.36 : 13,158.32 = 7,706.04 : x
  2. Step 2: Convert to fraction form
    8,739.36/13,158.32 = 7,706.04/x
  3. Step 3: Cross multiply
    8,739.36x = 13,158.32 × 7,706.04
  4. Step 4: Simplify right side
    8,739.36x = 101,398,540.25
  5. Step 5: Solve for x
    x = 101,398,540.25/8,739.36
  6. Step 6: Final answer
    x = 11,602.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.