Home / 1,211.49-1,806.57-1,200.51

Finding the Fourth Proportional to 1,211.49, 1,806.57 and 1,200.51

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Solution

The fourth proportional to 1,211.49, 1,806.57 and 1,200.51 is: 1,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.49 : 1,806.57 = 1,200.51 : x
  2. Step 2: Convert to fraction form
    1,211.49/1,806.57 = 1,200.51/x
  3. Step 3: Cross multiply
    1,211.49x = 1,806.57 × 1,200.51
  4. Step 4: Simplify right side
    1,211.49x = 2,168,805.35
  5. Step 5: Solve for x
    x = 2,168,805.35/1,211.49
  6. Step 6: Final answer
    x = 1,790.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.