Home / 8,140.48-12,213.12-2,946.56

Finding the Fourth Proportional to 8,140.48, 12,213.12 and 2,946.56

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Solution

The fourth proportional to 8,140.48, 12,213.12 and 2,946.56 is: 4,420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.48 : 12,213.12 = 2,946.56 : x
  2. Step 2: Convert to fraction form
    8,140.48/12,213.12 = 2,946.56/x
  3. Step 3: Cross multiply
    8,140.48x = 12,213.12 × 2,946.56
  4. Step 4: Simplify right side
    8,140.48x = 35,986,690.87
  5. Step 5: Solve for x
    x = 35,986,690.87/8,140.48
  6. Step 6: Final answer
    x = 4,420.71

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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.