Home / 8,138.28-12,210.96-3,461.46

Finding the Fourth Proportional to 8,138.28, 12,210.96 and 3,461.46

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Solution

The fourth proportional to 8,138.28, 12,210.96 and 3,461.46 is: 5,193.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.28 : 12,210.96 = 3,461.46 : x
  2. Step 2: Convert to fraction form
    8,138.28/12,210.96 = 3,461.46/x
  3. Step 3: Cross multiply
    8,138.28x = 12,210.96 × 3,461.46
  4. Step 4: Simplify right side
    8,138.28x = 42,267,749.60
  5. Step 5: Solve for x
    x = 42,267,749.60/8,138.28
  6. Step 6: Final answer
    x = 5,193.70

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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.