Home / 6,115.88-8,445.08-3,881.72

Finding the Fourth Proportional to 6,115.88, 8,445.08 and 3,881.72

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Solution

The fourth proportional to 6,115.88, 8,445.08 and 3,881.72 is: 5,360.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.88 : 8,445.08 = 3,881.72 : x
  2. Step 2: Convert to fraction form
    6,115.88/8,445.08 = 3,881.72/x
  3. Step 3: Cross multiply
    6,115.88x = 8,445.08 × 3,881.72
  4. Step 4: Simplify right side
    6,115.88x = 32,781,435.94
  5. Step 5: Solve for x
    x = 32,781,435.94/6,115.88
  6. Step 6: Final answer
    x = 5,360.05

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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.