Home / 8,961.28-12,359.84-6,309.44

Finding the Fourth Proportional to 8,961.28, 12,359.84 and 6,309.44

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Solution

The fourth proportional to 8,961.28, 12,359.84 and 6,309.44 is: 8,702.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.28 : 12,359.84 = 6,309.44 : x
  2. Step 2: Convert to fraction form
    8,961.28/12,359.84 = 6,309.44/x
  3. Step 3: Cross multiply
    8,961.28x = 12,359.84 × 6,309.44
  4. Step 4: Simplify right side
    8,961.28x = 77,983,668.89
  5. Step 5: Solve for x
    x = 77,983,668.89/8,961.28
  6. Step 6: Final answer
    x = 8,702.29

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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.