Home / 2,979.90-4,112.30-1,653.64

Finding the Fourth Proportional to 2,979.90, 4,112.30 and 1,653.64

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Solution

The fourth proportional to 2,979.90, 4,112.30 and 1,653.64 is: 2,282.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.90 : 4,112.30 = 1,653.64 : x
  2. Step 2: Convert to fraction form
    2,979.90/4,112.30 = 1,653.64/x
  3. Step 3: Cross multiply
    2,979.90x = 4,112.30 × 1,653.64
  4. Step 4: Simplify right side
    2,979.90x = 6,800,263.77
  5. Step 5: Solve for x
    x = 6,800,263.77/2,979.90
  6. Step 6: Final answer
    x = 2,282.04

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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.