Home / 2,889.12-4,333.45-2,811.21

Finding the Fourth Proportional to 2,889.12, 4,333.45 and 2,811.21

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Solution

The fourth proportional to 2,889.12, 4,333.45 and 2,811.21 is: 4,216.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.12 : 4,333.45 = 2,811.21 : x
  2. Step 2: Convert to fraction form
    2,889.12/4,333.45 = 2,811.21/x
  3. Step 3: Cross multiply
    2,889.12x = 4,333.45 × 2,811.21
  4. Step 4: Simplify right side
    2,889.12x = 12,182,219.97
  5. Step 5: Solve for x
    x = 12,182,219.97/2,889.12
  6. Step 6: Final answer
    x = 4,216.59

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1.5x scale

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.