Home / 8,140.71-11,234.38-4,555.55

Finding the Fourth Proportional to 8,140.71, 11,234.38 and 4,555.55

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Solution

The fourth proportional to 8,140.71, 11,234.38 and 4,555.55 is: 6,286.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.71 : 11,234.38 = 4,555.55 : x
  2. Step 2: Convert to fraction form
    8,140.71/11,234.38 = 4,555.55/x
  3. Step 3: Cross multiply
    8,140.71x = 11,234.38 × 4,555.55
  4. Step 4: Simplify right side
    8,140.71x = 51,178,741.85
  5. Step 5: Solve for x
    x = 51,178,741.85/8,140.71
  6. Step 6: Final answer
    x = 6,286.77

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Half scale
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Double scale
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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.