Home / 2,979.87-4,112.01-1,653.53

Finding the Fourth Proportional to 2,979.87, 4,112.01 and 1,653.53

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Solution

The fourth proportional to 2,979.87, 4,112.01 and 1,653.53 is: 2,281.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.87 : 4,112.01 = 1,653.53 : x
  2. Step 2: Convert to fraction form
    2,979.87/4,112.01 = 1,653.53/x
  3. Step 3: Cross multiply
    2,979.87x = 4,112.01 × 1,653.53
  4. Step 4: Simplify right side
    2,979.87x = 6,799,311.34
  5. Step 5: Solve for x
    x = 6,799,311.34/2,979.87
  6. Step 6: Final answer
    x = 2,281.75

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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.