Home / 1,619.10-2,427.45-693.90

Finding the Fourth Proportional to 1,619.10, 2,427.45 and 693.90

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Solution

The fourth proportional to 1,619.10, 2,427.45 and 693.90 is: 1,040.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.10 : 2,427.45 = 693.90 : x
  2. Step 2: Convert to fraction form
    1,619.10/2,427.45 = 693.90/x
  3. Step 3: Cross multiply
    1,619.10x = 2,427.45 × 693.90
  4. Step 4: Simplify right side
    1,619.10x = 1,684,407.56
  5. Step 5: Solve for x
    x = 1,684,407.56/1,619.10
  6. Step 6: Final answer
    x = 1,040.34

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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.