Home / 3,123.30-4,680.90-2,256.60

Finding the Fourth Proportional to 3,123.30, 4,680.90 and 2,256.60

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Solution

The fourth proportional to 3,123.30, 4,680.90 and 2,256.60 is: 3,381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.30 : 4,680.90 = 2,256.60 : x
  2. Step 2: Convert to fraction form
    3,123.30/4,680.90 = 2,256.60/x
  3. Step 3: Cross multiply
    3,123.30x = 4,680.90 × 2,256.60
  4. Step 4: Simplify right side
    3,123.30x = 10,562,918.94
  5. Step 5: Solve for x
    x = 10,562,918.94/3,123.30
  6. Step 6: Final answer
    x = 3,381.97

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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.