Home / 2,979.10-4,112.40-1,799.88

Finding the Fourth Proportional to 2,979.10, 4,112.40 and 1,799.88

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Solution

The fourth proportional to 2,979.10, 4,112.40 and 1,799.88 is: 2,484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.10 : 4,112.40 = 1,799.88 : x
  2. Step 2: Convert to fraction form
    2,979.10/4,112.40 = 1,799.88/x
  3. Step 3: Cross multiply
    2,979.10x = 4,112.40 × 1,799.88
  4. Step 4: Simplify right side
    2,979.10x = 7,401,826.51
  5. Step 5: Solve for x
    x = 7,401,826.51/2,979.10
  6. Step 6: Final answer
    x = 2,484.58

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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.