Home / 2,921.12-4,030.62-1,661.84

Finding the Fourth Proportional to 2,921.12, 4,030.62 and 1,661.84

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Solution

The fourth proportional to 2,921.12, 4,030.62 and 1,661.84 is: 2,293.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.12 : 4,030.62 = 1,661.84 : x
  2. Step 2: Convert to fraction form
    2,921.12/4,030.62 = 1,661.84/x
  3. Step 3: Cross multiply
    2,921.12x = 4,030.62 × 1,661.84
  4. Step 4: Simplify right side
    2,921.12x = 6,698,245.54
  5. Step 5: Solve for x
    x = 6,698,245.54/2,921.12
  6. Step 6: Final answer
    x = 2,293.04

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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.