Home / 2,921.45-4,379.57-1,072.14

Finding the Fourth Proportional to 2,921.45, 4,379.57 and 1,072.14

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Solution

The fourth proportional to 2,921.45, 4,379.57 and 1,072.14 is: 1,607.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.45 : 4,379.57 = 1,072.14 : x
  2. Step 2: Convert to fraction form
    2,921.45/4,379.57 = 1,072.14/x
  3. Step 3: Cross multiply
    2,921.45x = 4,379.57 × 1,072.14
  4. Step 4: Simplify right side
    2,921.45x = 4,695,505.10
  5. Step 5: Solve for x
    x = 4,695,505.10/2,921.45
  6. Step 6: Final answer
    x = 1,607.25

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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.