Home / 2,093.80-3,140.70-1,985.80

Finding the Fourth Proportional to 2,093.80, 3,140.70 and 1,985.80

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Solution

The fourth proportional to 2,093.80, 3,140.70 and 1,985.80 is: 2,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,093.80 : 3,140.70 = 1,985.80 : x
  2. Step 2: Convert to fraction form
    2,093.80/3,140.70 = 1,985.80/x
  3. Step 3: Cross multiply
    2,093.80x = 3,140.70 × 1,985.80
  4. Step 4: Simplify right side
    2,093.80x = 6,236,802.06
  5. Step 5: Solve for x
    x = 6,236,802.06/2,093.80
  6. Step 6: Final answer
    x = 2,978.70

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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.