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Finding the Fourth Proportional to 6,918.22, 9,544.92 and 4,085.70

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Solution

The fourth proportional to 6,918.22, 9,544.92 and 4,085.70 is: 5,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.22 : 9,544.92 = 4,085.70 : x
  2. Step 2: Convert to fraction form
    6,918.22/9,544.92 = 4,085.70/x
  3. Step 3: Cross multiply
    6,918.22x = 9,544.92 × 4,085.70
  4. Step 4: Simplify right side
    6,918.22x = 38,997,679.64
  5. Step 5: Solve for x
    x = 38,997,679.64/6,918.22
  6. Step 6: Final answer
    x = 5,636.95

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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.