Home / 7,643.23-11,465.39-2,643.53

Finding the Fourth Proportional to 7,643.23, 11,465.39 and 2,643.53

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Solution

The fourth proportional to 7,643.23, 11,465.39 and 2,643.53 is: 3,965.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.23 : 11,465.39 = 2,643.53 : x
  2. Step 2: Convert to fraction form
    7,643.23/11,465.39 = 2,643.53/x
  3. Step 3: Cross multiply
    7,643.23x = 11,465.39 × 2,643.53
  4. Step 4: Simplify right side
    7,643.23x = 30,309,102.43
  5. Step 5: Solve for x
    x = 30,309,102.43/7,643.23
  6. Step 6: Final answer
    x = 3,965.48

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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.