Home / 1,686.44-2,325.30-1,538.48

Finding the Fourth Proportional to 1,686.44, 2,325.30 and 1,538.48

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Solution

The fourth proportional to 1,686.44, 2,325.30 and 1,538.48 is: 2,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.44 : 2,325.30 = 1,538.48 : x
  2. Step 2: Convert to fraction form
    1,686.44/2,325.30 = 1,538.48/x
  3. Step 3: Cross multiply
    1,686.44x = 2,325.30 × 1,538.48
  4. Step 4: Simplify right side
    1,686.44x = 3,577,427.54
  5. Step 5: Solve for x
    x = 3,577,427.54/1,686.44
  6. Step 6: Final answer
    x = 2,121.29

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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.