Home / 1,930.89-2,664.95-1,145.09

Finding the Fourth Proportional to 1,930.89, 2,664.95 and 1,145.09

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Solution

The fourth proportional to 1,930.89, 2,664.95 and 1,145.09 is: 1,580.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.89 : 2,664.95 = 1,145.09 : x
  2. Step 2: Convert to fraction form
    1,930.89/2,664.95 = 1,145.09/x
  3. Step 3: Cross multiply
    1,930.89x = 2,664.95 × 1,145.09
  4. Step 4: Simplify right side
    1,930.89x = 3,051,597.13
  5. Step 5: Solve for x
    x = 3,051,597.13/1,930.89
  6. Step 6: Final answer
    x = 1,580.41

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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.