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Finding the Fourth Proportional to 7,081.74, 9,773.55 and 3,938.22

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Solution

The fourth proportional to 7,081.74, 9,773.55 and 3,938.22 is: 5,435.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.74 : 9,773.55 = 3,938.22 : x
  2. Step 2: Convert to fraction form
    7,081.74/9,773.55 = 3,938.22/x
  3. Step 3: Cross multiply
    7,081.74x = 9,773.55 × 3,938.22
  4. Step 4: Simplify right side
    7,081.74x = 38,490,390.08
  5. Step 5: Solve for x
    x = 38,490,390.08/7,081.74
  6. Step 6: Final answer
    x = 5,435.16

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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.