Home / 3,101.48-4,283.51-2,105.02

Finding the Fourth Proportional to 3,101.48, 4,283.51 and 2,105.02

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Solution

The fourth proportional to 3,101.48, 4,283.51 and 2,105.02 is: 2,907.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.48 : 4,283.51 = 2,105.02 : x
  2. Step 2: Convert to fraction form
    3,101.48/4,283.51 = 2,105.02/x
  3. Step 3: Cross multiply
    3,101.48x = 4,283.51 × 2,105.02
  4. Step 4: Simplify right side
    3,101.48x = 9,016,874.22
  5. Step 5: Solve for x
    x = 9,016,874.22/3,101.48
  6. Step 6: Final answer
    x = 2,907.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.