Home / 3,520.72-4,858.44-2,123.20

Finding the Fourth Proportional to 3,520.72, 4,858.44 and 2,123.20

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Solution

The fourth proportional to 3,520.72, 4,858.44 and 2,123.20 is: 2,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.72 : 4,858.44 = 2,123.20 : x
  2. Step 2: Convert to fraction form
    3,520.72/4,858.44 = 2,123.20/x
  3. Step 3: Cross multiply
    3,520.72x = 4,858.44 × 2,123.20
  4. Step 4: Simplify right side
    3,520.72x = 10,315,439.81
  5. Step 5: Solve for x
    x = 10,315,439.81/3,520.72
  6. Step 6: Final answer
    x = 2,929.92

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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.