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Finding the Fourth Proportional to 6,786.78, 9,365.18 and 3,802.87

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Solution

The fourth proportional to 6,786.78, 9,365.18 and 3,802.87 is: 5,247.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,786.78 : 9,365.18 = 3,802.87 : x
  2. Step 2: Convert to fraction form
    6,786.78/9,365.18 = 3,802.87/x
  3. Step 3: Cross multiply
    6,786.78x = 9,365.18 × 3,802.87
  4. Step 4: Simplify right side
    6,786.78x = 35,614,562.07
  5. Step 5: Solve for x
    x = 35,614,562.07/6,786.78
  6. Step 6: Final answer
    x = 5,247.64

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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.