Home / 2,979.24-4,109.32-1,798.28

Finding the Fourth Proportional to 2,979.24, 4,109.32 and 1,798.28

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Solution

The fourth proportional to 2,979.24, 4,109.32 and 1,798.28 is: 2,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.24 : 4,109.32 = 1,798.28 : x
  2. Step 2: Convert to fraction form
    2,979.24/4,109.32 = 1,798.28/x
  3. Step 3: Cross multiply
    2,979.24x = 4,109.32 × 1,798.28
  4. Step 4: Simplify right side
    2,979.24x = 7,389,707.97
  5. Step 5: Solve for x
    x = 7,389,707.97/2,979.24
  6. Step 6: Final answer
    x = 2,480.40

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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.