Home / 1,558.03-2,149.36-998.23

Finding the Fourth Proportional to 1,558.03, 2,149.36 and 998.23

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Solution

The fourth proportional to 1,558.03, 2,149.36 and 998.23 is: 1,377.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.03 : 2,149.36 = 998.23 : x
  2. Step 2: Convert to fraction form
    1,558.03/2,149.36 = 998.23/x
  3. Step 3: Cross multiply
    1,558.03x = 2,149.36 × 998.23
  4. Step 4: Simplify right side
    1,558.03x = 2,145,555.63
  5. Step 5: Solve for x
    x = 2,145,555.63/1,558.03
  6. Step 6: Final answer
    x = 1,377.10

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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.