Home / 7,687.61-11,530.26-2,140.38

Finding the Fourth Proportional to 7,687.61, 11,530.26 and 2,140.38

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Solution

The fourth proportional to 7,687.61, 11,530.26 and 2,140.38 is: 3,210.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.61 : 11,530.26 = 2,140.38 : x
  2. Step 2: Convert to fraction form
    7,687.61/11,530.26 = 2,140.38/x
  3. Step 3: Cross multiply
    7,687.61x = 11,530.26 × 2,140.38
  4. Step 4: Simplify right side
    7,687.61x = 24,679,069.55
  5. Step 5: Solve for x
    x = 24,679,069.55/7,687.61
  6. Step 6: Final answer
    x = 3,210.24

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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.