Home / 1,278.09-1,914.30-1,176.93

Finding the Fourth Proportional to 1,278.09, 1,914.30 and 1,176.93

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Solution

The fourth proportional to 1,278.09, 1,914.30 and 1,176.93 is: 1,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.09 : 1,914.30 = 1,176.93 : x
  2. Step 2: Convert to fraction form
    1,278.09/1,914.30 = 1,176.93/x
  3. Step 3: Cross multiply
    1,278.09x = 1,914.30 × 1,176.93
  4. Step 4: Simplify right side
    1,278.09x = 2,252,997.10
  5. Step 5: Solve for x
    x = 2,252,997.10/1,278.09
  6. Step 6: Final answer
    x = 1,762.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.