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Finding the Fourth Proportional to 7,786.02, 11,656.65 and 7,239.30

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Solution

The fourth proportional to 7,786.02, 11,656.65 and 7,239.30 is: 10,838.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,786.02 : 11,656.65 = 7,239.30 : x
  2. Step 2: Convert to fraction form
    7,786.02/11,656.65 = 7,239.30/x
  3. Step 3: Cross multiply
    7,786.02x = 11,656.65 × 7,239.30
  4. Step 4: Simplify right side
    7,786.02x = 84,385,986.35
  5. Step 5: Solve for x
    x = 84,385,986.35/7,786.02
  6. Step 6: Final answer
    x = 10,838.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.