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Finding the Fourth Proportional to 8,902.68, 12,285.84 and 4,923.72

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Solution

The fourth proportional to 8,902.68, 12,285.84 and 4,923.72 is: 6,794.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,902.68 : 12,285.84 = 4,923.72 : x
  2. Step 2: Convert to fraction form
    8,902.68/12,285.84 = 4,923.72/x
  3. Step 3: Cross multiply
    8,902.68x = 12,285.84 × 4,923.72
  4. Step 4: Simplify right side
    8,902.68x = 60,492,036.12
  5. Step 5: Solve for x
    x = 60,492,036.12/8,902.68
  6. Step 6: Final answer
    x = 6,794.81

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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.