Home / 2,678.03-4,017.90-1,291.49

Finding the Fourth Proportional to 2,678.03, 4,017.90 and 1,291.49

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Solution

The fourth proportional to 2,678.03, 4,017.90 and 1,291.49 is: 1,937.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.03 : 4,017.90 = 1,291.49 : x
  2. Step 2: Convert to fraction form
    2,678.03/4,017.90 = 1,291.49/x
  3. Step 3: Cross multiply
    2,678.03x = 4,017.90 × 1,291.49
  4. Step 4: Simplify right side
    2,678.03x = 5,189,077.67
  5. Step 5: Solve for x
    x = 5,189,077.67/2,678.03
  6. Step 6: Final answer
    x = 1,937.65

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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.