Home / 1,273.68-1,918.08-1,113.30

Finding the Fourth Proportional to 1,273.68, 1,918.08 and 1,113.30

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Solution

The fourth proportional to 1,273.68, 1,918.08 and 1,113.30 is: 1,676.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.68 : 1,918.08 = 1,113.30 : x
  2. Step 2: Convert to fraction form
    1,273.68/1,918.08 = 1,113.30/x
  3. Step 3: Cross multiply
    1,273.68x = 1,918.08 × 1,113.30
  4. Step 4: Simplify right side
    1,273.68x = 2,135,398.46
  5. Step 5: Solve for x
    x = 2,135,398.46/1,273.68
  6. Step 6: Final answer
    x = 1,676.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.