Home / 8,455.47-11,672.36-5,627.85

Finding the Fourth Proportional to 8,455.47, 11,672.36 and 5,627.85

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Solution

The fourth proportional to 8,455.47, 11,672.36 and 5,627.85 is: 7,768.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.47 : 11,672.36 = 5,627.85 : x
  2. Step 2: Convert to fraction form
    8,455.47/11,672.36 = 5,627.85/x
  3. Step 3: Cross multiply
    8,455.47x = 11,672.36 × 5,627.85
  4. Step 4: Simplify right side
    8,455.47x = 65,690,291.23
  5. Step 5: Solve for x
    x = 65,690,291.23/8,455.47
  6. Step 6: Final answer
    x = 7,768.97

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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.