Home / 4,907.12-6,771.84-2,811.28

Finding the Fourth Proportional to 4,907.12, 6,771.84 and 2,811.28

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Solution

The fourth proportional to 4,907.12, 6,771.84 and 2,811.28 is: 3,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,907.12 : 6,771.84 = 2,811.28 : x
  2. Step 2: Convert to fraction form
    4,907.12/6,771.84 = 2,811.28/x
  3. Step 3: Cross multiply
    4,907.12x = 6,771.84 × 2,811.28
  4. Step 4: Simplify right side
    4,907.12x = 19,037,538.36
  5. Step 5: Solve for x
    x = 19,037,538.36/4,907.12
  6. Step 6: Final answer
    x = 3,879.57

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1.5x scale

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.