Home / 1,938.64-2,892.68-1,821.07

Finding the Fourth Proportional to 1,938.64, 2,892.68 and 1,821.07

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Solution

The fourth proportional to 1,938.64, 2,892.68 and 1,821.07 is: 2,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.64 : 2,892.68 = 1,821.07 : x
  2. Step 2: Convert to fraction form
    1,938.64/2,892.68 = 1,821.07/x
  3. Step 3: Cross multiply
    1,938.64x = 2,892.68 × 1,821.07
  4. Step 4: Simplify right side
    1,938.64x = 5,267,772.77
  5. Step 5: Solve for x
    x = 5,267,772.77/1,938.64
  6. Step 6: Final answer
    x = 2,717.25

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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.