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Finding the Fourth Proportional to 8,859.79, 12,226.51 and 4,880.90

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Solution

The fourth proportional to 8,859.79, 12,226.51 and 4,880.90 is: 6,735.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.79 : 12,226.51 = 4,880.90 : x
  2. Step 2: Convert to fraction form
    8,859.79/12,226.51 = 4,880.90/x
  3. Step 3: Cross multiply
    8,859.79x = 12,226.51 × 4,880.90
  4. Step 4: Simplify right side
    8,859.79x = 59,676,372.66
  5. Step 5: Solve for x
    x = 59,676,372.66/8,859.79
  6. Step 6: Final answer
    x = 6,735.64

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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.