Home / 9,385.32-12,951.90-5,136.75

Finding the Fourth Proportional to 9,385.32, 12,951.90 and 5,136.75

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Solution

The fourth proportional to 9,385.32, 12,951.90 and 5,136.75 is: 7,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,385.32 : 12,951.90 = 5,136.75 : x
  2. Step 2: Convert to fraction form
    9,385.32/12,951.90 = 5,136.75/x
  3. Step 3: Cross multiply
    9,385.32x = 12,951.90 × 5,136.75
  4. Step 4: Simplify right side
    9,385.32x = 66,530,672.33
  5. Step 5: Solve for x
    x = 66,530,672.33/9,385.32
  6. Step 6: Final answer
    x = 7,088.80

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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.