Home / 1,478.74-2,039.64-1,198.99

Finding the Fourth Proportional to 1,478.74, 2,039.64 and 1,198.99

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Solution

The fourth proportional to 1,478.74, 2,039.64 and 1,198.99 is: 1,653.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.74 : 2,039.64 = 1,198.99 : x
  2. Step 2: Convert to fraction form
    1,478.74/2,039.64 = 1,198.99/x
  3. Step 3: Cross multiply
    1,478.74x = 2,039.64 × 1,198.99
  4. Step 4: Simplify right side
    1,478.74x = 2,445,507.96
  5. Step 5: Solve for x
    x = 2,445,507.96/1,478.74
  6. Step 6: Final answer
    x = 1,653.78

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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.