Home / 1,431.84-2,143.43-1,294.95

Finding the Fourth Proportional to 1,431.84, 2,143.43 and 1,294.95

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Solution

The fourth proportional to 1,431.84, 2,143.43 and 1,294.95 is: 1,938.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.84 : 2,143.43 = 1,294.95 : x
  2. Step 2: Convert to fraction form
    1,431.84/2,143.43 = 1,294.95/x
  3. Step 3: Cross multiply
    1,431.84x = 2,143.43 × 1,294.95
  4. Step 4: Simplify right side
    1,431.84x = 2,775,634.68
  5. Step 5: Solve for x
    x = 2,775,634.68/1,431.84
  6. Step 6: Final answer
    x = 1,938.51

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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.