Home / 8,147.12-11,225.66-5,489.91

Finding the Fourth Proportional to 8,147.12, 11,225.66 and 5,489.91

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Solution

The fourth proportional to 8,147.12, 11,225.66 and 5,489.91 is: 7,564.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.12 : 11,225.66 = 5,489.91 : x
  2. Step 2: Convert to fraction form
    8,147.12/11,225.66 = 5,489.91/x
  3. Step 3: Cross multiply
    8,147.12x = 11,225.66 × 5,489.91
  4. Step 4: Simplify right side
    8,147.12x = 61,627,835.64
  5. Step 5: Solve for x
    x = 61,627,835.64/8,147.12
  6. Step 6: Final answer
    x = 7,564.38

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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.