Home / 2,979.09-4,111.64-1,653.22

Finding the Fourth Proportional to 2,979.09, 4,111.64 and 1,653.22

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Solution

The fourth proportional to 2,979.09, 4,111.64 and 1,653.22 is: 2,281.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.09 : 4,111.64 = 1,653.22 : x
  2. Step 2: Convert to fraction form
    2,979.09/4,111.64 = 1,653.22/x
  3. Step 3: Cross multiply
    2,979.09x = 4,111.64 × 1,653.22
  4. Step 4: Simplify right side
    2,979.09x = 6,797,437.21
  5. Step 5: Solve for x
    x = 6,797,437.21/2,979.09
  6. Step 6: Final answer
    x = 2,281.72

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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.