Home / 7,122.51-10,687.59-2,965.39

Finding the Fourth Proportional to 7,122.51, 10,687.59 and 2,965.39

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Solution

The fourth proportional to 7,122.51, 10,687.59 and 2,965.39 is: 4,449.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.51 : 10,687.59 = 2,965.39 : x
  2. Step 2: Convert to fraction form
    7,122.51/10,687.59 = 2,965.39/x
  3. Step 3: Cross multiply
    7,122.51x = 10,687.59 × 2,965.39
  4. Step 4: Simplify right side
    7,122.51x = 31,692,872.51
  5. Step 5: Solve for x
    x = 31,692,872.51/7,122.51
  6. Step 6: Final answer
    x = 4,449.68

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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.