Home / 8,623.78-12,937.32-2,778.82

Finding the Fourth Proportional to 8,623.78, 12,937.32 and 2,778.82

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Solution

The fourth proportional to 8,623.78, 12,937.32 and 2,778.82 is: 4,168.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.78 : 12,937.32 = 2,778.82 : x
  2. Step 2: Convert to fraction form
    8,623.78/12,937.32 = 2,778.82/x
  3. Step 3: Cross multiply
    8,623.78x = 12,937.32 × 2,778.82
  4. Step 4: Simplify right side
    8,623.78x = 35,950,483.56
  5. Step 5: Solve for x
    x = 35,950,483.56/8,623.78
  6. Step 6: Final answer
    x = 4,168.76

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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.