Home / 1,938.67-2,686.64-1,901.74

Finding the Fourth Proportional to 1,938.67, 2,686.64 and 1,901.74

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Solution

The fourth proportional to 1,938.67, 2,686.64 and 1,901.74 is: 2,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.67 : 2,686.64 = 1,901.74 : x
  2. Step 2: Convert to fraction form
    1,938.67/2,686.64 = 1,901.74/x
  3. Step 3: Cross multiply
    1,938.67x = 2,686.64 × 1,901.74
  4. Step 4: Simplify right side
    1,938.67x = 5,109,290.75
  5. Step 5: Solve for x
    x = 5,109,290.75/1,938.67
  6. Step 6: Final answer
    x = 2,635.46

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.