Home / 2,979.96-4,112.32-1,653.68

Finding the Fourth Proportional to 2,979.96, 4,112.32 and 1,653.68

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Solution

The fourth proportional to 2,979.96, 4,112.32 and 1,653.68 is: 2,282.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.96 : 4,112.32 = 1,653.68 : x
  2. Step 2: Convert to fraction form
    2,979.96/4,112.32 = 1,653.68/x
  3. Step 3: Cross multiply
    2,979.96x = 4,112.32 × 1,653.68
  4. Step 4: Simplify right side
    2,979.96x = 6,800,461.34
  5. Step 5: Solve for x
    x = 6,800,461.34/2,979.96
  6. Step 6: Final answer
    x = 2,282.06

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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.