Home / 8,316.20-12,484.40-3,878.12

Finding the Fourth Proportional to 8,316.20, 12,484.40 and 3,878.12

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Solution

The fourth proportional to 8,316.20, 12,484.40 and 3,878.12 is: 5,821.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.20 : 12,484.40 = 3,878.12 : x
  2. Step 2: Convert to fraction form
    8,316.20/12,484.40 = 3,878.12/x
  3. Step 3: Cross multiply
    8,316.20x = 12,484.40 × 3,878.12
  4. Step 4: Simplify right side
    8,316.20x = 48,416,001.33
  5. Step 5: Solve for x
    x = 48,416,001.33/8,316.20
  6. Step 6: Final answer
    x = 5,821.89

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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.