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Finding the Fourth Proportional to 8,691.80, 13,039.32 and 2,848.76

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Solution

The fourth proportional to 8,691.80, 13,039.32 and 2,848.76 is: 4,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.80 : 13,039.32 = 2,848.76 : x
  2. Step 2: Convert to fraction form
    8,691.80/13,039.32 = 2,848.76/x
  3. Step 3: Cross multiply
    8,691.80x = 13,039.32 × 2,848.76
  4. Step 4: Simplify right side
    8,691.80x = 37,145,893.24
  5. Step 5: Solve for x
    x = 37,145,893.24/8,691.80
  6. Step 6: Final answer
    x = 4,273.67

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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.