Home / 8,281.38-11,428.31-4,555.38

Finding the Fourth Proportional to 8,281.38, 11,428.31 and 4,555.38

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Solution

The fourth proportional to 8,281.38, 11,428.31 and 4,555.38 is: 6,286.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.38 : 11,428.31 = 4,555.38 : x
  2. Step 2: Convert to fraction form
    8,281.38/11,428.31 = 4,555.38/x
  3. Step 3: Cross multiply
    8,281.38x = 11,428.31 × 4,555.38
  4. Step 4: Simplify right side
    8,281.38x = 52,060,294.81
  5. Step 5: Solve for x
    x = 52,060,294.81/8,281.38
  6. Step 6: Final answer
    x = 6,286.43

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Half scale
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Double scale
Find fourth proportional to 8,282.38, 11,429.69 and 4,556.38
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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.