Home / 1,960.79-2,943.77-1,139.63

Finding the Fourth Proportional to 1,960.79, 2,943.77 and 1,139.63

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Solution

The fourth proportional to 1,960.79, 2,943.77 and 1,139.63 is: 1,710.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.79 : 2,943.77 = 1,139.63 : x
  2. Step 2: Convert to fraction form
    1,960.79/2,943.77 = 1,139.63/x
  3. Step 3: Cross multiply
    1,960.79x = 2,943.77 × 1,139.63
  4. Step 4: Simplify right side
    1,960.79x = 3,354,788.19
  5. Step 5: Solve for x
    x = 3,354,788.19/1,960.79
  6. Step 6: Final answer
    x = 1,710.94

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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.