Home / 7,687.94-11,531.72-2,140.70

Finding the Fourth Proportional to 7,687.94, 11,531.72 and 2,140.70

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Solution

The fourth proportional to 7,687.94, 11,531.72 and 2,140.70 is: 3,211.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.94 : 11,531.72 = 2,140.70 : x
  2. Step 2: Convert to fraction form
    7,687.94/11,531.72 = 2,140.70/x
  3. Step 3: Cross multiply
    7,687.94x = 11,531.72 × 2,140.70
  4. Step 4: Simplify right side
    7,687.94x = 24,685,953.00
  5. Step 5: Solve for x
    x = 24,685,953.00/7,687.94
  6. Step 6: Final answer
    x = 3,211.00

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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.