Home / 8,071.76-12,107.61-2,148.64

Finding the Fourth Proportional to 8,071.76, 12,107.61 and 2,148.64

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Solution

The fourth proportional to 8,071.76, 12,107.61 and 2,148.64 is: 3,222.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.76 : 12,107.61 = 2,148.64 : x
  2. Step 2: Convert to fraction form
    8,071.76/12,107.61 = 2,148.64/x
  3. Step 3: Cross multiply
    8,071.76x = 12,107.61 × 2,148.64
  4. Step 4: Simplify right side
    8,071.76x = 26,014,933.48
  5. Step 5: Solve for x
    x = 26,014,933.48/8,071.76
  6. Step 6: Final answer
    x = 3,222.96

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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.