Home / 7,690.28-11,526.45-3,530.72

Finding the Fourth Proportional to 7,690.28, 11,526.45 and 3,530.72

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Solution

The fourth proportional to 7,690.28, 11,526.45 and 3,530.72 is: 5,291.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.28 : 11,526.45 = 3,530.72 : x
  2. Step 2: Convert to fraction form
    7,690.28/11,526.45 = 3,530.72/x
  3. Step 3: Cross multiply
    7,690.28x = 11,526.45 × 3,530.72
  4. Step 4: Simplify right side
    7,690.28x = 40,696,667.54
  5. Step 5: Solve for x
    x = 40,696,667.54/7,690.28
  6. Step 6: Final answer
    x = 5,291.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.