Home / 9,190.20-12,656.08-8,627.28

Finding the Fourth Proportional to 9,190.20, 12,656.08 and 8,627.28

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Solution

The fourth proportional to 9,190.20, 12,656.08 and 8,627.28 is: 11,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.20 : 12,656.08 = 8,627.28 : x
  2. Step 2: Convert to fraction form
    9,190.20/12,656.08 = 8,627.28/x
  3. Step 3: Cross multiply
    9,190.20x = 12,656.08 × 8,627.28
  4. Step 4: Simplify right side
    9,190.20x = 109,187,545.86
  5. Step 5: Solve for x
    x = 109,187,545.86/9,190.20
  6. Step 6: Final answer
    x = 11,880.87

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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.