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Finding the Fourth Proportional to 9,216.76, 12,709.08 and 6,227.40

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Solution

The fourth proportional to 9,216.76, 12,709.08 and 6,227.40 is: 8,587.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,216.76 : 12,709.08 = 6,227.40 : x
  2. Step 2: Convert to fraction form
    9,216.76/12,709.08 = 6,227.40/x
  3. Step 3: Cross multiply
    9,216.76x = 12,709.08 × 6,227.40
  4. Step 4: Simplify right side
    9,216.76x = 79,144,524.79
  5. Step 5: Solve for x
    x = 79,144,524.79/9,216.76
  6. Step 6: Final answer
    x = 8,587.02

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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.