Home / 7,619.31-11,432.95-3,119.71

Finding the Fourth Proportional to 7,619.31, 11,432.95 and 3,119.71

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Solution

The fourth proportional to 7,619.31, 11,432.95 and 3,119.71 is: 4,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.31 : 11,432.95 = 3,119.71 : x
  2. Step 2: Convert to fraction form
    7,619.31/11,432.95 = 3,119.71/x
  3. Step 3: Cross multiply
    7,619.31x = 11,432.95 × 3,119.71
  4. Step 4: Simplify right side
    7,619.31x = 35,667,488.44
  5. Step 5: Solve for x
    x = 35,667,488.44/7,619.31
  6. Step 6: Final answer
    x = 4,681.20

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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.