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Finding the Fourth Proportional to 6,357.49, 8,777.67 and 3,968.39

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Solution

The fourth proportional to 6,357.49, 8,777.67 and 3,968.39 is: 5,479.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,357.49 : 8,777.67 = 3,968.39 : x
  2. Step 2: Convert to fraction form
    6,357.49/8,777.67 = 3,968.39/x
  3. Step 3: Cross multiply
    6,357.49x = 8,777.67 × 3,968.39
  4. Step 4: Simplify right side
    6,357.49x = 34,833,217.85
  5. Step 5: Solve for x
    x = 34,833,217.85/6,357.49
  6. Step 6: Final answer
    x = 5,479.08

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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.