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Finding the Fourth Proportional to 6,789.84, 9,367.44 and 3,955.80

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Solution

The fourth proportional to 6,789.84, 9,367.44 and 3,955.80 is: 5,457.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,789.84 : 9,367.44 = 3,955.80 : x
  2. Step 2: Convert to fraction form
    6,789.84/9,367.44 = 3,955.80/x
  3. Step 3: Cross multiply
    6,789.84x = 9,367.44 × 3,955.80
  4. Step 4: Simplify right side
    6,789.84x = 37,055,719.15
  5. Step 5: Solve for x
    x = 37,055,719.15/6,789.84
  6. Step 6: Final answer
    x = 5,457.52

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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.