Home / 1,938.51-2,674.29-1,152.39

Finding the Fourth Proportional to 1,938.51, 2,674.29 and 1,152.39

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Solution

The fourth proportional to 1,938.51, 2,674.29 and 1,152.39 is: 1,589.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.51 : 2,674.29 = 1,152.39 : x
  2. Step 2: Convert to fraction form
    1,938.51/2,674.29 = 1,152.39/x
  3. Step 3: Cross multiply
    1,938.51x = 2,674.29 × 1,152.39
  4. Step 4: Simplify right side
    1,938.51x = 3,081,825.05
  5. Step 5: Solve for x
    x = 3,081,825.05/1,938.51
  6. Step 6: Final answer
    x = 1,589.79

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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.