Home / 2,979.79-4,114.46-2,419.37

Finding the Fourth Proportional to 2,979.79, 4,114.46 and 2,419.37

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Solution

The fourth proportional to 2,979.79, 4,114.46 and 2,419.37 is: 3,340.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.79 : 4,114.46 = 2,419.37 : x
  2. Step 2: Convert to fraction form
    2,979.79/4,114.46 = 2,419.37/x
  3. Step 3: Cross multiply
    2,979.79x = 4,114.46 × 2,419.37
  4. Step 4: Simplify right side
    2,979.79x = 9,954,402.00
  5. Step 5: Solve for x
    x = 9,954,402.00/2,979.79
  6. Step 6: Final answer
    x = 3,340.64

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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.