Home / 8,431.05-12,646.65-3,749.79

Finding the Fourth Proportional to 8,431.05, 12,646.65 and 3,749.79

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Solution

The fourth proportional to 8,431.05, 12,646.65 and 3,749.79 is: 5,624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.05 : 12,646.65 = 3,749.79 : x
  2. Step 2: Convert to fraction form
    8,431.05/12,646.65 = 3,749.79/x
  3. Step 3: Cross multiply
    8,431.05x = 12,646.65 × 3,749.79
  4. Step 4: Simplify right side
    8,431.05x = 47,422,281.70
  5. Step 5: Solve for x
    x = 47,422,281.70/8,431.05
  6. Step 6: Final answer
    x = 5,624.72

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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.