Home / 1,938.09-2,674.64-1,098.79

Finding the Fourth Proportional to 1,938.09, 2,674.64 and 1,098.79

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Solution

The fourth proportional to 1,938.09, 2,674.64 and 1,098.79 is: 1,516.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.09 : 2,674.64 = 1,098.79 : x
  2. Step 2: Convert to fraction form
    1,938.09/2,674.64 = 1,098.79/x
  3. Step 3: Cross multiply
    1,938.09x = 2,674.64 × 1,098.79
  4. Step 4: Simplify right side
    1,938.09x = 2,938,863.75
  5. Step 5: Solve for x
    x = 2,938,863.75/1,938.09
  6. Step 6: Final answer
    x = 1,516.37

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1.5x scale

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.