Home / 1,619.14-2,427.30-644.62

Finding the Fourth Proportional to 1,619.14, 2,427.30 and 644.62

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Solution

The fourth proportional to 1,619.14, 2,427.30 and 644.62 is: 966.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.14 : 2,427.30 = 644.62 : x
  2. Step 2: Convert to fraction form
    1,619.14/2,427.30 = 644.62/x
  3. Step 3: Cross multiply
    1,619.14x = 2,427.30 × 644.62
  4. Step 4: Simplify right side
    1,619.14x = 1,564,686.13
  5. Step 5: Solve for x
    x = 1,564,686.13/1,619.14
  6. Step 6: Final answer
    x = 966.37

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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.