Home / 1,930.95-2,665.08-1,145.43

Finding the Fourth Proportional to 1,930.95, 2,665.08 and 1,145.43

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Solution

The fourth proportional to 1,930.95, 2,665.08 and 1,145.43 is: 1,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.95 : 2,665.08 = 1,145.43 : x
  2. Step 2: Convert to fraction form
    1,930.95/2,665.08 = 1,145.43/x
  3. Step 3: Cross multiply
    1,930.95x = 2,665.08 × 1,145.43
  4. Step 4: Simplify right side
    1,930.95x = 3,052,662.58
  5. Step 5: Solve for x
    x = 3,052,662.58/1,930.95
  6. Step 6: Final answer
    x = 1,580.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.