Home / 1,278.18-1,906.16-1,114.56

Finding the Fourth Proportional to 1,278.18, 1,906.16 and 1,114.56

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Solution

The fourth proportional to 1,278.18, 1,906.16 and 1,114.56 is: 1,662.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.18 : 1,906.16 = 1,114.56 : x
  2. Step 2: Convert to fraction form
    1,278.18/1,906.16 = 1,114.56/x
  3. Step 3: Cross multiply
    1,278.18x = 1,906.16 × 1,114.56
  4. Step 4: Simplify right side
    1,278.18x = 2,124,529.69
  5. Step 5: Solve for x
    x = 2,124,529.69/1,278.18
  6. Step 6: Final answer
    x = 1,662.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.