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Finding the Fourth Proportional to 6,909.68, 10,405.16 and 4,975.44

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Solution

The fourth proportional to 6,909.68, 10,405.16 and 4,975.44 is: 7,492.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.68 : 10,405.16 = 4,975.44 : x
  2. Step 2: Convert to fraction form
    6,909.68/10,405.16 = 4,975.44/x
  3. Step 3: Cross multiply
    6,909.68x = 10,405.16 × 4,975.44
  4. Step 4: Simplify right side
    6,909.68x = 51,770,249.27
  5. Step 5: Solve for x
    x = 51,770,249.27/6,909.68
  6. Step 6: Final answer
    x = 7,492.42

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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.