Home / 2,135.70-3,203.55-2,117.48

Finding the Fourth Proportional to 2,135.70, 3,203.55 and 2,117.48

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Solution

The fourth proportional to 2,135.70, 3,203.55 and 2,117.48 is: 3,176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.70 : 3,203.55 = 2,117.48 : x
  2. Step 2: Convert to fraction form
    2,135.70/3,203.55 = 2,117.48/x
  3. Step 3: Cross multiply
    2,135.70x = 3,203.55 × 2,117.48
  4. Step 4: Simplify right side
    2,135.70x = 6,783,437.04
  5. Step 5: Solve for x
    x = 6,783,437.04/2,135.70
  6. Step 6: Final answer
    x = 3,176.21

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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.