Home / 3,921.74-5,409.27-3,328.19

Finding the Fourth Proportional to 3,921.74, 5,409.27 and 3,328.19

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Solution

The fourth proportional to 3,921.74, 5,409.27 and 3,328.19 is: 4,590.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.74 : 5,409.27 = 3,328.19 : x
  2. Step 2: Convert to fraction form
    3,921.74/5,409.27 = 3,328.19/x
  3. Step 3: Cross multiply
    3,921.74x = 5,409.27 × 3,328.19
  4. Step 4: Simplify right side
    3,921.74x = 18,003,038.79
  5. Step 5: Solve for x
    x = 18,003,038.79/3,921.74
  6. Step 6: Final answer
    x = 4,590.58

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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.