Home / 3,898.04-5,379.01-2,129.27

Finding the Fourth Proportional to 3,898.04, 5,379.01 and 2,129.27

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Solution

The fourth proportional to 3,898.04, 5,379.01 and 2,129.27 is: 2,938.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.04 : 5,379.01 = 2,129.27 : x
  2. Step 2: Convert to fraction form
    3,898.04/5,379.01 = 2,129.27/x
  3. Step 3: Cross multiply
    3,898.04x = 5,379.01 × 2,129.27
  4. Step 4: Simplify right side
    3,898.04x = 11,453,327.08
  5. Step 5: Solve for x
    x = 11,453,327.08/3,898.04
  6. Step 6: Final answer
    x = 2,938.23

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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.