Home / 7,079.48-9,769.74-3,935.72

Finding the Fourth Proportional to 7,079.48, 9,769.74 and 3,935.72

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Solution

The fourth proportional to 7,079.48, 9,769.74 and 3,935.72 is: 5,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.48 : 9,769.74 = 3,935.72 : x
  2. Step 2: Convert to fraction form
    7,079.48/9,769.74 = 3,935.72/x
  3. Step 3: Cross multiply
    7,079.48x = 9,769.74 × 3,935.72
  4. Step 4: Simplify right side
    7,079.48x = 38,450,961.11
  5. Step 5: Solve for x
    x = 38,450,961.11/7,079.48
  6. Step 6: Final answer
    x = 5,431.33

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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.