Home / 12,751.32-19,122-3,864.72

Finding the Fourth Proportional to 12,751.32, 19,122 and 3,864.72

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Solution

The fourth proportional to 12,751.32, 19,122 and 3,864.72 is: 5,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,751.32 : 19,122 = 3,864.72 : x
  2. Step 2: Convert to fraction form
    12,751.32/19,122 = 3,864.72/x
  3. Step 3: Cross multiply
    12,751.32x = 19,122 × 3,864.72
  4. Step 4: Simplify right side
    12,751.32x = 73,901,175.84
  5. Step 5: Solve for x
    x = 73,901,175.84/12,751.32
  6. Step 6: Final answer
    x = 5,795.57

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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.