Home / 3,118.75-4,679.84-1,271.16

Finding the Fourth Proportional to 3,118.75, 4,679.84 and 1,271.16

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Solution

The fourth proportional to 3,118.75, 4,679.84 and 1,271.16 is: 1,907.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.75 : 4,679.84 = 1,271.16 : x
  2. Step 2: Convert to fraction form
    3,118.75/4,679.84 = 1,271.16/x
  3. Step 3: Cross multiply
    3,118.75x = 4,679.84 × 1,271.16
  4. Step 4: Simplify right side
    3,118.75x = 5,948,828.59
  5. Step 5: Solve for x
    x = 5,948,828.59/3,118.75
  6. Step 6: Final answer
    x = 1,907.44

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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.