Home / 2,289.90-3,158.46-2,213.76

Finding the Fourth Proportional to 2,289.90, 3,158.46 and 2,213.76

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Solution

The fourth proportional to 2,289.90, 3,158.46 and 2,213.76 is: 3,053.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.90 : 3,158.46 = 2,213.76 : x
  2. Step 2: Convert to fraction form
    2,289.90/3,158.46 = 2,213.76/x
  3. Step 3: Cross multiply
    2,289.90x = 3,158.46 × 2,213.76
  4. Step 4: Simplify right side
    2,289.90x = 6,992,072.41
  5. Step 5: Solve for x
    x = 6,992,072.41/2,289.90
  6. Step 6: Final answer
    x = 3,053.44

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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.