Home / 1,941.30-2,678.96-1,057.12

Finding the Fourth Proportional to 1,941.30, 2,678.96 and 1,057.12

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Solution

The fourth proportional to 1,941.30, 2,678.96 and 1,057.12 is: 1,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.30 : 2,678.96 = 1,057.12 : x
  2. Step 2: Convert to fraction form
    1,941.30/2,678.96 = 1,057.12/x
  3. Step 3: Cross multiply
    1,941.30x = 2,678.96 × 1,057.12
  4. Step 4: Simplify right side
    1,941.30x = 2,831,982.20
  5. Step 5: Solve for x
    x = 2,831,982.20/1,941.30
  6. Step 6: Final answer
    x = 1,458.81

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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.