Home / 9,385.15-12,882.51-8,299.12

Finding the Fourth Proportional to 9,385.15, 12,882.51 and 8,299.12

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Solution

The fourth proportional to 9,385.15, 12,882.51 and 8,299.12 is: 11,391.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,385.15 : 12,882.51 = 8,299.12 : x
  2. Step 2: Convert to fraction form
    9,385.15/12,882.51 = 8,299.12/x
  3. Step 3: Cross multiply
    9,385.15x = 12,882.51 × 8,299.12
  4. Step 4: Simplify right side
    9,385.15x = 106,913,496.39
  5. Step 5: Solve for x
    x = 106,913,496.39/9,385.15
  6. Step 6: Final answer
    x = 11,391.77

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Half scale
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Double scale
Find fourth proportional to 9,386.15, 12,883.88 and 8,300.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.