Home / 2,103.40-3,155.10-1,135.65

Finding the Fourth Proportional to 2,103.40, 3,155.10 and 1,135.65

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Solution

The fourth proportional to 2,103.40, 3,155.10 and 1,135.65 is: 1,703.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.40 : 3,155.10 = 1,135.65 : x
  2. Step 2: Convert to fraction form
    2,103.40/3,155.10 = 1,135.65/x
  3. Step 3: Cross multiply
    2,103.40x = 3,155.10 × 1,135.65
  4. Step 4: Simplify right side
    2,103.40x = 3,583,083.64
  5. Step 5: Solve for x
    x = 3,583,083.64/2,103.40
  6. Step 6: Final answer
    x = 1,703.48

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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.