Home / 1,619.40-2,234.04-1,288.26

Finding the Fourth Proportional to 1,619.40, 2,234.04 and 1,288.26

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Solution

The fourth proportional to 1,619.40, 2,234.04 and 1,288.26 is: 1,777.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.40 : 2,234.04 = 1,288.26 : x
  2. Step 2: Convert to fraction form
    1,619.40/2,234.04 = 1,288.26/x
  3. Step 3: Cross multiply
    1,619.40x = 2,234.04 × 1,288.26
  4. Step 4: Simplify right side
    1,619.40x = 2,878,024.37
  5. Step 5: Solve for x
    x = 2,878,024.37/1,619.40
  6. Step 6: Final answer
    x = 1,777.22

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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.