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Finding the Fourth Proportional to 7,079.77, 9,770.12 and 3,893.13

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Solution

The fourth proportional to 7,079.77, 9,770.12 and 3,893.13 is: 5,372.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.77 : 9,770.12 = 3,893.13 : x
  2. Step 2: Convert to fraction form
    7,079.77/9,770.12 = 3,893.13/x
  3. Step 3: Cross multiply
    7,079.77x = 9,770.12 × 3,893.13
  4. Step 4: Simplify right side
    7,079.77x = 38,036,301.19
  5. Step 5: Solve for x
    x = 38,036,301.19/7,079.77
  6. Step 6: Final answer
    x = 5,372.54

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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.