Home / 1,968.19-2,715.19-1,269.79

Finding the Fourth Proportional to 1,968.19, 2,715.19 and 1,269.79

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Solution

The fourth proportional to 1,968.19, 2,715.19 and 1,269.79 is: 1,751.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.19 : 2,715.19 = 1,269.79 : x
  2. Step 2: Convert to fraction form
    1,968.19/2,715.19 = 1,269.79/x
  3. Step 3: Cross multiply
    1,968.19x = 2,715.19 × 1,269.79
  4. Step 4: Simplify right side
    1,968.19x = 3,447,721.11
  5. Step 5: Solve for x
    x = 3,447,721.11/1,968.19
  6. Step 6: Final answer
    x = 1,751.72

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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.