Home / 1,705.15-2,342.91-1,355.23

Finding the Fourth Proportional to 1,705.15, 2,342.91 and 1,355.23

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Solution

The fourth proportional to 1,705.15, 2,342.91 and 1,355.23 is: 1,862.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.15 : 2,342.91 = 1,355.23 : x
  2. Step 2: Convert to fraction form
    1,705.15/2,342.91 = 1,355.23/x
  3. Step 3: Cross multiply
    1,705.15x = 2,342.91 × 1,355.23
  4. Step 4: Simplify right side
    1,705.15x = 3,175,163.43
  5. Step 5: Solve for x
    x = 3,175,163.43/1,705.15
  6. Step 6: Final answer
    x = 1,862.11

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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.