Home / 8,690.41-13,027.82-3,142.45

Finding the Fourth Proportional to 8,690.41, 13,027.82 and 3,142.45

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Solution

The fourth proportional to 8,690.41, 13,027.82 and 3,142.45 is: 4,710.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.41 : 13,027.82 = 3,142.45 : x
  2. Step 2: Convert to fraction form
    8,690.41/13,027.82 = 3,142.45/x
  3. Step 3: Cross multiply
    8,690.41x = 13,027.82 × 3,142.45
  4. Step 4: Simplify right side
    8,690.41x = 40,939,313.38
  5. Step 5: Solve for x
    x = 40,939,313.38/8,690.41
  6. Step 6: Final answer
    x = 4,710.86

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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.