Home / 8,919.90-12,305.52-6,269.04

Finding the Fourth Proportional to 8,919.90, 12,305.52 and 6,269.04

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Solution

The fourth proportional to 8,919.90, 12,305.52 and 6,269.04 is: 8,648.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.90 : 12,305.52 = 6,269.04 : x
  2. Step 2: Convert to fraction form
    8,919.90/12,305.52 = 6,269.04/x
  3. Step 3: Cross multiply
    8,919.90x = 12,305.52 × 6,269.04
  4. Step 4: Simplify right side
    8,919.90x = 77,143,797.10
  5. Step 5: Solve for x
    x = 77,143,797.10/8,919.90
  6. Step 6: Final answer
    x = 8,648.50

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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.