Home / 1,938.29-2,890.53-1,725.71

Finding the Fourth Proportional to 1,938.29, 2,890.53 and 1,725.71

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Solution

The fourth proportional to 1,938.29, 2,890.53 and 1,725.71 is: 2,573.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.29 : 2,890.53 = 1,725.71 : x
  2. Step 2: Convert to fraction form
    1,938.29/2,890.53 = 1,725.71/x
  3. Step 3: Cross multiply
    1,938.29x = 2,890.53 × 1,725.71
  4. Step 4: Simplify right side
    1,938.29x = 4,988,202.07
  5. Step 5: Solve for x
    x = 4,988,202.07/1,938.29
  6. Step 6: Final answer
    x = 2,573.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.