Home / 2,979.01-4,111.22-1,720.29

Finding the Fourth Proportional to 2,979.01, 4,111.22 and 1,720.29

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Solution

The fourth proportional to 2,979.01, 4,111.22 and 1,720.29 is: 2,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.01 : 4,111.22 = 1,720.29 : x
  2. Step 2: Convert to fraction form
    2,979.01/4,111.22 = 1,720.29/x
  3. Step 3: Cross multiply
    2,979.01x = 4,111.22 × 1,720.29
  4. Step 4: Simplify right side
    2,979.01x = 7,072,497.47
  5. Step 5: Solve for x
    x = 7,072,497.47/2,979.01
  6. Step 6: Final answer
    x = 2,374.11

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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.