Home / 2,678.06-4,018.31-1,291.14

Finding the Fourth Proportional to 2,678.06, 4,018.31 and 1,291.14

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Solution

The fourth proportional to 2,678.06, 4,018.31 and 1,291.14 is: 1,937.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.06 : 4,018.31 = 1,291.14 : x
  2. Step 2: Convert to fraction form
    2,678.06/4,018.31 = 1,291.14/x
  3. Step 3: Cross multiply
    2,678.06x = 4,018.31 × 1,291.14
  4. Step 4: Simplify right side
    2,678.06x = 5,188,199.16
  5. Step 5: Solve for x
    x = 5,188,199.16/2,678.06
  6. Step 6: Final answer
    x = 1,937.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.