Home / 2,979.14-4,111-1,800.86

Finding the Fourth Proportional to 2,979.14, 4,111 and 1,800.86

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Solution

The fourth proportional to 2,979.14, 4,111 and 1,800.86 is: 2,485.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.14 : 4,111 = 1,800.86 : x
  2. Step 2: Convert to fraction form
    2,979.14/4,111 = 1,800.86/x
  3. Step 3: Cross multiply
    2,979.14x = 4,111 × 1,800.86
  4. Step 4: Simplify right side
    2,979.14x = 7,403,335.46
  5. Step 5: Solve for x
    x = 7,403,335.46/2,979.14
  6. Step 6: Final answer
    x = 2,485.06

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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.