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Finding the Fourth Proportional to 3,108.68, 4,287.84 and 2,975.84

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Solution

The fourth proportional to 3,108.68, 4,287.84 and 2,975.84 is: 4,104.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.68 : 4,287.84 = 2,975.84 : x
  2. Step 2: Convert to fraction form
    3,108.68/4,287.84 = 2,975.84/x
  3. Step 3: Cross multiply
    3,108.68x = 4,287.84 × 2,975.84
  4. Step 4: Simplify right side
    3,108.68x = 12,759,925.79
  5. Step 5: Solve for x
    x = 12,759,925.79/3,108.68
  6. Step 6: Final answer
    x = 4,104.61

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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.