Home / 8,458.73-12,688.18-3,778.98

Finding the Fourth Proportional to 8,458.73, 12,688.18 and 3,778.98

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Solution

The fourth proportional to 8,458.73, 12,688.18 and 3,778.98 is: 5,668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.73 : 12,688.18 = 3,778.98 : x
  2. Step 2: Convert to fraction form
    8,458.73/12,688.18 = 3,778.98/x
  3. Step 3: Cross multiply
    8,458.73x = 12,688.18 × 3,778.98
  4. Step 4: Simplify right side
    8,458.73x = 47,948,378.46
  5. Step 5: Solve for x
    x = 47,948,378.46/8,458.73
  6. Step 6: Final answer
    x = 5,668.51

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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.