Home / 1,690.23-2,315.58-1,627.06

Finding the Fourth Proportional to 1,690.23, 2,315.58 and 1,627.06

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Solution

The fourth proportional to 1,690.23, 2,315.58 and 1,627.06 is: 2,229.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.23 : 2,315.58 = 1,627.06 : x
  2. Step 2: Convert to fraction form
    1,690.23/2,315.58 = 1,627.06/x
  3. Step 3: Cross multiply
    1,690.23x = 2,315.58 × 1,627.06
  4. Step 4: Simplify right side
    1,690.23x = 3,767,567.88
  5. Step 5: Solve for x
    x = 3,767,567.88/1,690.23
  6. Step 6: Final answer
    x = 2,229.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.