Home / 7,078.84-9,769.52-3,935.04

Finding the Fourth Proportional to 7,078.84, 9,769.52 and 3,935.04

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Solution

The fourth proportional to 7,078.84, 9,769.52 and 3,935.04 is: 5,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.84 : 9,769.52 = 3,935.04 : x
  2. Step 2: Convert to fraction form
    7,078.84/9,769.52 = 3,935.04/x
  3. Step 3: Cross multiply
    7,078.84x = 9,769.52 × 3,935.04
  4. Step 4: Simplify right side
    7,078.84x = 38,443,451.98
  5. Step 5: Solve for x
    x = 38,443,451.98/7,078.84
  6. Step 6: Final answer
    x = 5,430.76

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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.