Home / 2,979.51-4,111.79-1,653.23

Finding the Fourth Proportional to 2,979.51, 4,111.79 and 1,653.23

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Solution

The fourth proportional to 2,979.51, 4,111.79 and 1,653.23 is: 2,281.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.51 : 4,111.79 = 1,653.23 : x
  2. Step 2: Convert to fraction form
    2,979.51/4,111.79 = 1,653.23/x
  3. Step 3: Cross multiply
    2,979.51x = 4,111.79 × 1,653.23
  4. Step 4: Simplify right side
    2,979.51x = 6,797,734.58
  5. Step 5: Solve for x
    x = 6,797,734.58/2,979.51
  6. Step 6: Final answer
    x = 2,281.49

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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.