Home / 8,906.12-12,290.35-4,872.91

Finding the Fourth Proportional to 8,906.12, 12,290.35 and 4,872.91

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Solution

The fourth proportional to 8,906.12, 12,290.35 and 4,872.91 is: 6,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.12 : 12,290.35 = 4,872.91 : x
  2. Step 2: Convert to fraction form
    8,906.12/12,290.35 = 4,872.91/x
  3. Step 3: Cross multiply
    8,906.12x = 12,290.35 × 4,872.91
  4. Step 4: Simplify right side
    8,906.12x = 59,889,790.87
  5. Step 5: Solve for x
    x = 59,889,790.87/8,906.12
  6. Step 6: Final answer
    x = 6,724.57

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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.