Home / 2,138.07-3,202.95-1,210.77

Finding the Fourth Proportional to 2,138.07, 3,202.95 and 1,210.77

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Solution

The fourth proportional to 2,138.07, 3,202.95 and 1,210.77 is: 1,813.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.07 : 3,202.95 = 1,210.77 : x
  2. Step 2: Convert to fraction form
    2,138.07/3,202.95 = 1,210.77/x
  3. Step 3: Cross multiply
    2,138.07x = 3,202.95 × 1,210.77
  4. Step 4: Simplify right side
    2,138.07x = 3,878,035.77
  5. Step 5: Solve for x
    x = 3,878,035.77/2,138.07
  6. Step 6: Final answer
    x = 1,813.80

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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.