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Finding the Fourth Proportional to 8,859.67, 12,225.79 and 4,880.56

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Solution

The fourth proportional to 8,859.67, 12,225.79 and 4,880.56 is: 6,734.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.67 : 12,225.79 = 4,880.56 : x
  2. Step 2: Convert to fraction form
    8,859.67/12,225.79 = 4,880.56/x
  3. Step 3: Cross multiply
    8,859.67x = 12,225.79 × 4,880.56
  4. Step 4: Simplify right side
    8,859.67x = 59,668,701.64
  5. Step 5: Solve for x
    x = 59,668,701.64/8,859.67
  6. Step 6: Final answer
    x = 6,734.87

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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.