Home / 8,319.90-12,484.98-3,876.78

Finding the Fourth Proportional to 8,319.90, 12,484.98 and 3,876.78

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Solution

The fourth proportional to 8,319.90, 12,484.98 and 3,876.78 is: 5,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.90 : 12,484.98 = 3,876.78 : x
  2. Step 2: Convert to fraction form
    8,319.90/12,484.98 = 3,876.78/x
  3. Step 3: Cross multiply
    8,319.90x = 12,484.98 × 3,876.78
  4. Step 4: Simplify right side
    8,319.90x = 48,401,520.76
  5. Step 5: Solve for x
    x = 48,401,520.76/8,319.90
  6. Step 6: Final answer
    x = 5,817.56

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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.