Home / 1,690.48-2,335.82-1,395.24

Finding the Fourth Proportional to 1,690.48, 2,335.82 and 1,395.24

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Solution

The fourth proportional to 1,690.48, 2,335.82 and 1,395.24 is: 1,927.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.48 : 2,335.82 = 1,395.24 : x
  2. Step 2: Convert to fraction form
    1,690.48/2,335.82 = 1,395.24/x
  3. Step 3: Cross multiply
    1,690.48x = 2,335.82 × 1,395.24
  4. Step 4: Simplify right side
    1,690.48x = 3,259,021.95
  5. Step 5: Solve for x
    x = 3,259,021.95/1,690.48
  6. Step 6: Final answer
    x = 1,927.86

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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.