Home / 7,051.20-9,729.60-3,906.96

Finding the Fourth Proportional to 7,051.20, 9,729.60 and 3,906.96

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Solution

The fourth proportional to 7,051.20, 9,729.60 and 3,906.96 is: 5,391.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,051.20 : 9,729.60 = 3,906.96 : x
  2. Step 2: Convert to fraction form
    7,051.20/9,729.60 = 3,906.96/x
  3. Step 3: Cross multiply
    7,051.20x = 9,729.60 × 3,906.96
  4. Step 4: Simplify right side
    7,051.20x = 38,013,158.02
  5. Step 5: Solve for x
    x = 38,013,158.02/7,051.20
  6. Step 6: Final answer
    x = 5,391.02

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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.