Home / 3,620.55-4,986.34-3,123.01

Finding the Fourth Proportional to 3,620.55, 4,986.34 and 3,123.01

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Solution

The fourth proportional to 3,620.55, 4,986.34 and 3,123.01 is: 4,301.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.55 : 4,986.34 = 3,123.01 : x
  2. Step 2: Convert to fraction form
    3,620.55/4,986.34 = 3,123.01/x
  3. Step 3: Cross multiply
    3,620.55x = 4,986.34 × 3,123.01
  4. Step 4: Simplify right side
    3,620.55x = 15,572,389.68
  5. Step 5: Solve for x
    x = 15,572,389.68/3,620.55
  6. Step 6: Final answer
    x = 4,301.11

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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.