Home / 1,485.56-2,224.96-1,278.48

Finding the Fourth Proportional to 1,485.56, 2,224.96 and 1,278.48

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Solution

The fourth proportional to 1,485.56, 2,224.96 and 1,278.48 is: 1,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.56 : 2,224.96 = 1,278.48 : x
  2. Step 2: Convert to fraction form
    1,485.56/2,224.96 = 1,278.48/x
  3. Step 3: Cross multiply
    1,485.56x = 2,224.96 × 1,278.48
  4. Step 4: Simplify right side
    1,485.56x = 2,844,566.86
  5. Step 5: Solve for x
    x = 2,844,566.86/1,485.56
  6. Step 6: Final answer
    x = 1,914.81

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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.