Home / 1,231.10-1,696.92-1,071.18

Finding the Fourth Proportional to 1,231.10, 1,696.92 and 1,071.18

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Solution

The fourth proportional to 1,231.10, 1,696.92 and 1,071.18 is: 1,476.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.10 : 1,696.92 = 1,071.18 : x
  2. Step 2: Convert to fraction form
    1,231.10/1,696.92 = 1,071.18/x
  3. Step 3: Cross multiply
    1,231.10x = 1,696.92 × 1,071.18
  4. Step 4: Simplify right side
    1,231.10x = 1,817,706.77
  5. Step 5: Solve for x
    x = 1,817,706.77/1,231.10
  6. Step 6: Final answer
    x = 1,476.49

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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.