Home / 2,980.67-4,115.93-1,863.51

Finding the Fourth Proportional to 2,980.67, 4,115.93 and 1,863.51

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Solution

The fourth proportional to 2,980.67, 4,115.93 and 1,863.51 is: 2,573.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.67 : 4,115.93 = 1,863.51 : x
  2. Step 2: Convert to fraction form
    2,980.67/4,115.93 = 1,863.51/x
  3. Step 3: Cross multiply
    2,980.67x = 4,115.93 × 1,863.51
  4. Step 4: Simplify right side
    2,980.67x = 7,670,076.71
  5. Step 5: Solve for x
    x = 7,670,076.71/2,980.67
  6. Step 6: Final answer
    x = 2,573.27

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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.