Home / 7,141.40-10,712.10-2,212.55

Finding the Fourth Proportional to 7,141.40, 10,712.10 and 2,212.55

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Solution

The fourth proportional to 7,141.40, 10,712.10 and 2,212.55 is: 3,318.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.40 : 10,712.10 = 2,212.55 : x
  2. Step 2: Convert to fraction form
    7,141.40/10,712.10 = 2,212.55/x
  3. Step 3: Cross multiply
    7,141.40x = 10,712.10 × 2,212.55
  4. Step 4: Simplify right side
    7,141.40x = 23,701,056.86
  5. Step 5: Solve for x
    x = 23,701,056.86/7,141.40
  6. Step 6: Final answer
    x = 3,318.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.