Home / 1,381.79-2,068.73-1,294.49

Finding the Fourth Proportional to 1,381.79, 2,068.73 and 1,294.49

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Solution

The fourth proportional to 1,381.79, 2,068.73 and 1,294.49 is: 1,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.79 : 2,068.73 = 1,294.49 : x
  2. Step 2: Convert to fraction form
    1,381.79/2,068.73 = 1,294.49/x
  3. Step 3: Cross multiply
    1,381.79x = 2,068.73 × 1,294.49
  4. Step 4: Simplify right side
    1,381.79x = 2,677,933.48
  5. Step 5: Solve for x
    x = 2,677,933.48/1,381.79
  6. Step 6: Final answer
    x = 1,938.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.