Home / 8,919.06-12,312.36-6,368.73

Finding the Fourth Proportional to 8,919.06, 12,312.36 and 6,368.73

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Solution

The fourth proportional to 8,919.06, 12,312.36 and 6,368.73 is: 8,791.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.06 : 12,312.36 = 6,368.73 : x
  2. Step 2: Convert to fraction form
    8,919.06/12,312.36 = 6,368.73/x
  3. Step 3: Cross multiply
    8,919.06x = 12,312.36 × 6,368.73
  4. Step 4: Simplify right side
    8,919.06x = 78,414,096.50
  5. Step 5: Solve for x
    x = 78,414,096.50/8,919.06
  6. Step 6: Final answer
    x = 8,791.74

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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.