Home / 3,920.81-5,410.60-2,152.37

Finding the Fourth Proportional to 3,920.81, 5,410.60 and 2,152.37

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Solution

The fourth proportional to 3,920.81, 5,410.60 and 2,152.37 is: 2,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.81 : 5,410.60 = 2,152.37 : x
  2. Step 2: Convert to fraction form
    3,920.81/5,410.60 = 2,152.37/x
  3. Step 3: Cross multiply
    3,920.81x = 5,410.60 × 2,152.37
  4. Step 4: Simplify right side
    3,920.81x = 11,645,621.27
  5. Step 5: Solve for x
    x = 11,645,621.27/3,920.81
  6. Step 6: Final answer
    x = 2,970.21

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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.