Home / 8,431.32-12,649.14-3,814.68

Finding the Fourth Proportional to 8,431.32, 12,649.14 and 3,814.68

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Solution

The fourth proportional to 8,431.32, 12,649.14 and 3,814.68 is: 5,723.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.32 : 12,649.14 = 3,814.68 : x
  2. Step 2: Convert to fraction form
    8,431.32/12,649.14 = 3,814.68/x
  3. Step 3: Cross multiply
    8,431.32x = 12,649.14 × 3,814.68
  4. Step 4: Simplify right side
    8,431.32x = 48,252,421.38
  5. Step 5: Solve for x
    x = 48,252,421.38/8,431.32
  6. Step 6: Final answer
    x = 5,723.00

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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.