Home / 8,270.55-11,416.86-5,285.70

Finding the Fourth Proportional to 8,270.55, 11,416.86 and 5,285.70

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Solution

The fourth proportional to 8,270.55, 11,416.86 and 5,285.70 is: 7,296.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.55 : 11,416.86 = 5,285.70 : x
  2. Step 2: Convert to fraction form
    8,270.55/11,416.86 = 5,285.70/x
  3. Step 3: Cross multiply
    8,270.55x = 11,416.86 × 5,285.70
  4. Step 4: Simplify right side
    8,270.55x = 60,346,096.90
  5. Step 5: Solve for x
    x = 60,346,096.90/8,270.55
  6. Step 6: Final answer
    x = 7,296.50

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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.