Home / 1,689.44-2,530.80-1,294.56

Finding the Fourth Proportional to 1,689.44, 2,530.80 and 1,294.56

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Solution

The fourth proportional to 1,689.44, 2,530.80 and 1,294.56 is: 1,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.44 : 2,530.80 = 1,294.56 : x
  2. Step 2: Convert to fraction form
    1,689.44/2,530.80 = 1,294.56/x
  3. Step 3: Cross multiply
    1,689.44x = 2,530.80 × 1,294.56
  4. Step 4: Simplify right side
    1,689.44x = 3,276,272.45
  5. Step 5: Solve for x
    x = 3,276,272.45/1,689.44
  6. Step 6: Final answer
    x = 1,939.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.