Home / 8,285.12-11,420.50-5,627.92

Finding the Fourth Proportional to 8,285.12, 11,420.50 and 5,627.92

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Solution

The fourth proportional to 8,285.12, 11,420.50 and 5,627.92 is: 7,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.12 : 11,420.50 = 5,627.92 : x
  2. Step 2: Convert to fraction form
    8,285.12/11,420.50 = 5,627.92/x
  3. Step 3: Cross multiply
    8,285.12x = 11,420.50 × 5,627.92
  4. Step 4: Simplify right side
    8,285.12x = 64,273,660.36
  5. Step 5: Solve for x
    x = 64,273,660.36/8,285.12
  6. Step 6: Final answer
    x = 7,757.72

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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.