Home / 2,778.12-4,167.80-1,046.76

Finding the Fourth Proportional to 2,778.12, 4,167.80 and 1,046.76

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Solution

The fourth proportional to 2,778.12, 4,167.80 and 1,046.76 is: 1,570.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.12 : 4,167.80 = 1,046.76 : x
  2. Step 2: Convert to fraction form
    2,778.12/4,167.80 = 1,046.76/x
  3. Step 3: Cross multiply
    2,778.12x = 4,167.80 × 1,046.76
  4. Step 4: Simplify right side
    2,778.12x = 4,362,686.33
  5. Step 5: Solve for x
    x = 4,362,686.33/2,778.12
  6. Step 6: Final answer
    x = 1,570.37

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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.