Home / 2,979.17-4,111.35-1,800

Finding the Fourth Proportional to 2,979.17, 4,111.35 and 1,800

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Solution

The fourth proportional to 2,979.17, 4,111.35 and 1,800 is: 2,484.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.17 : 4,111.35 = 1,800 : x
  2. Step 2: Convert to fraction form
    2,979.17/4,111.35 = 1,800/x
  3. Step 3: Cross multiply
    2,979.17x = 4,111.35 × 1,800
  4. Step 4: Simplify right side
    2,979.17x = 7,400,430.00
  5. Step 5: Solve for x
    x = 7,400,430.00/2,979.17
  6. Step 6: Final answer
    x = 2,484.06

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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.