Home / 8,424.86-11,636.61-5,781.02

Finding the Fourth Proportional to 8,424.86, 11,636.61 and 5,781.02

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Solution

The fourth proportional to 8,424.86, 11,636.61 and 5,781.02 is: 7,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.86 : 11,636.61 = 5,781.02 : x
  2. Step 2: Convert to fraction form
    8,424.86/11,636.61 = 5,781.02/x
  3. Step 3: Cross multiply
    8,424.86x = 11,636.61 × 5,781.02
  4. Step 4: Simplify right side
    8,424.86x = 67,271,475.14
  5. Step 5: Solve for x
    x = 67,271,475.14/8,424.86
  6. Step 6: Final answer
    x = 7,984.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.