Home / 2,979.71-4,111.70-1,653.38

Finding the Fourth Proportional to 2,979.71, 4,111.70 and 1,653.38

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Solution

The fourth proportional to 2,979.71, 4,111.70 and 1,653.38 is: 2,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.71 : 4,111.70 = 1,653.38 : x
  2. Step 2: Convert to fraction form
    2,979.71/4,111.70 = 1,653.38/x
  3. Step 3: Cross multiply
    2,979.71x = 4,111.70 × 1,653.38
  4. Step 4: Simplify right side
    2,979.71x = 6,798,202.55
  5. Step 5: Solve for x
    x = 6,798,202.55/2,979.71
  6. Step 6: Final answer
    x = 2,281.50

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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.