Home / 2,971.87-4,455.37-1,121.93

Finding the Fourth Proportional to 2,971.87, 4,455.37 and 1,121.93

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Solution

The fourth proportional to 2,971.87, 4,455.37 and 1,121.93 is: 1,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.87 : 4,455.37 = 1,121.93 : x
  2. Step 2: Convert to fraction form
    2,971.87/4,455.37 = 1,121.93/x
  3. Step 3: Cross multiply
    2,971.87x = 4,455.37 × 1,121.93
  4. Step 4: Simplify right side
    2,971.87x = 4,998,585.38
  5. Step 5: Solve for x
    x = 4,998,585.38/2,971.87
  6. Step 6: Final answer
    x = 1,681.97

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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.