Home / 1,968.13-2,715.15-1,211.23

Finding the Fourth Proportional to 1,968.13, 2,715.15 and 1,211.23

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Solution

The fourth proportional to 1,968.13, 2,715.15 and 1,211.23 is: 1,670.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.13 : 2,715.15 = 1,211.23 : x
  2. Step 2: Convert to fraction form
    1,968.13/2,715.15 = 1,211.23/x
  3. Step 3: Cross multiply
    1,968.13x = 2,715.15 × 1,211.23
  4. Step 4: Simplify right side
    1,968.13x = 3,288,674.16
  5. Step 5: Solve for x
    x = 3,288,674.16/1,968.13
  6. Step 6: Final answer
    x = 1,670.97

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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.