Home / 1,537.19-2,121.33-838.56

Finding the Fourth Proportional to 1,537.19, 2,121.33 and 838.56

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Solution

The fourth proportional to 1,537.19, 2,121.33 and 838.56 is: 1,157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.19 : 2,121.33 = 838.56 : x
  2. Step 2: Convert to fraction form
    1,537.19/2,121.33 = 838.56/x
  3. Step 3: Cross multiply
    1,537.19x = 2,121.33 × 838.56
  4. Step 4: Simplify right side
    1,537.19x = 1,778,862.48
  5. Step 5: Solve for x
    x = 1,778,862.48/1,537.19
  6. Step 6: Final answer
    x = 1,157.22

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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.