Home / 2,179.85-3,009.56-1,955.75

Finding the Fourth Proportional to 2,179.85, 3,009.56 and 1,955.75

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Solution

The fourth proportional to 2,179.85, 3,009.56 and 1,955.75 is: 2,700.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.85 : 3,009.56 = 1,955.75 : x
  2. Step 2: Convert to fraction form
    2,179.85/3,009.56 = 1,955.75/x
  3. Step 3: Cross multiply
    2,179.85x = 3,009.56 × 1,955.75
  4. Step 4: Simplify right side
    2,179.85x = 5,885,922.14
  5. Step 5: Solve for x
    x = 5,885,922.14/2,179.85
  6. Step 6: Final answer
    x = 2,700.16

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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.