Home / 2,979.26-4,110.78-1,800.40

Finding the Fourth Proportional to 2,979.26, 4,110.78 and 1,800.40

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Solution

The fourth proportional to 2,979.26, 4,110.78 and 1,800.40 is: 2,484.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.26 : 4,110.78 = 1,800.40 : x
  2. Step 2: Convert to fraction form
    2,979.26/4,110.78 = 1,800.40/x
  3. Step 3: Cross multiply
    2,979.26x = 4,110.78 × 1,800.40
  4. Step 4: Simplify right side
    2,979.26x = 7,401,027.76
  5. Step 5: Solve for x
    x = 7,401,027.76/2,979.26
  6. Step 6: Final answer
    x = 2,484.18

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1.5x scale

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.