Home / 8,629.92-11,904.48-5,978.88

Finding the Fourth Proportional to 8,629.92, 11,904.48 and 5,978.88

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Solution

The fourth proportional to 8,629.92, 11,904.48 and 5,978.88 is: 8,247.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,629.92 : 11,904.48 = 5,978.88 : x
  2. Step 2: Convert to fraction form
    8,629.92/11,904.48 = 5,978.88/x
  3. Step 3: Cross multiply
    8,629.92x = 11,904.48 × 5,978.88
  4. Step 4: Simplify right side
    8,629.92x = 71,175,457.38
  5. Step 5: Solve for x
    x = 71,175,457.38/8,629.92
  6. Step 6: Final answer
    x = 8,247.52

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1.5x scale

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.