Home / 1,971.48-2,721.42-1,185.38

Finding the Fourth Proportional to 1,971.48, 2,721.42 and 1,185.38

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Solution

The fourth proportional to 1,971.48, 2,721.42 and 1,185.38 is: 1,636.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.48 : 2,721.42 = 1,185.38 : x
  2. Step 2: Convert to fraction form
    1,971.48/2,721.42 = 1,185.38/x
  3. Step 3: Cross multiply
    1,971.48x = 2,721.42 × 1,185.38
  4. Step 4: Simplify right side
    1,971.48x = 3,225,903.23
  5. Step 5: Solve for x
    x = 3,225,903.23/1,971.48
  6. Step 6: Final answer
    x = 1,636.29

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1.5x scale

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.