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Finding the Fourth Proportional to 5,877.66, 8,105.85 and 3,890.19

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Solution

The fourth proportional to 5,877.66, 8,105.85 and 3,890.19 is: 5,364.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877.66 : 8,105.85 = 3,890.19 : x
  2. Step 2: Convert to fraction form
    5,877.66/8,105.85 = 3,890.19/x
  3. Step 3: Cross multiply
    5,877.66x = 8,105.85 × 3,890.19
  4. Step 4: Simplify right side
    5,877.66x = 31,533,296.61
  5. Step 5: Solve for x
    x = 31,533,296.61/5,877.66
  6. Step 6: Final answer
    x = 5,364.94

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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.