Home / 1,965.13-2,711.50-1,178.89

Finding the Fourth Proportional to 1,965.13, 2,711.50 and 1,178.89

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Solution

The fourth proportional to 1,965.13, 2,711.50 and 1,178.89 is: 1,626.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.13 : 2,711.50 = 1,178.89 : x
  2. Step 2: Convert to fraction form
    1,965.13/2,711.50 = 1,178.89/x
  3. Step 3: Cross multiply
    1,965.13x = 2,711.50 × 1,178.89
  4. Step 4: Simplify right side
    1,965.13x = 3,196,560.24
  5. Step 5: Solve for x
    x = 3,196,560.24/1,965.13
  6. Step 6: Final answer
    x = 1,626.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.