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Finding the Fourth Proportional to 8,378.69, 12,559.39 and 3,764.93

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Solution

The fourth proportional to 8,378.69, 12,559.39 and 3,764.93 is: 5,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.69 : 12,559.39 = 3,764.93 : x
  2. Step 2: Convert to fraction form
    8,378.69/12,559.39 = 3,764.93/x
  3. Step 3: Cross multiply
    8,378.69x = 12,559.39 × 3,764.93
  4. Step 4: Simplify right side
    8,378.69x = 47,285,151.98
  5. Step 5: Solve for x
    x = 47,285,151.98/8,378.69
  6. Step 6: Final answer
    x = 5,643.51

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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.