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Finding the Fourth Proportional to 6,879.52, 9,496.16 and 4,085

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Solution

The fourth proportional to 6,879.52, 9,496.16 and 4,085 is: 5,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.52 : 9,496.16 = 4,085 : x
  2. Step 2: Convert to fraction form
    6,879.52/9,496.16 = 4,085/x
  3. Step 3: Cross multiply
    6,879.52x = 9,496.16 × 4,085
  4. Step 4: Simplify right side
    6,879.52x = 38,791,813.60
  5. Step 5: Solve for x
    x = 38,791,813.60/6,879.52
  6. Step 6: Final answer
    x = 5,638.74

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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.