Home / 8,899.32-12,279.99-4,919.89

Finding the Fourth Proportional to 8,899.32, 12,279.99 and 4,919.89

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Solution

The fourth proportional to 8,899.32, 12,279.99 and 4,919.89 is: 6,788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.32 : 12,279.99 = 4,919.89 : x
  2. Step 2: Convert to fraction form
    8,899.32/12,279.99 = 4,919.89/x
  3. Step 3: Cross multiply
    8,899.32x = 12,279.99 × 4,919.89
  4. Step 4: Simplify right side
    8,899.32x = 60,416,169.26
  5. Step 5: Solve for x
    x = 60,416,169.26/8,899.32
  6. Step 6: Final answer
    x = 6,788.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.