Home / 3,977.91-5,970.05-2,130.35

Finding the Fourth Proportional to 3,977.91, 5,970.05 and 2,130.35

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Solution

The fourth proportional to 3,977.91, 5,970.05 and 2,130.35 is: 3,197.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.91 : 5,970.05 = 2,130.35 : x
  2. Step 2: Convert to fraction form
    3,977.91/5,970.05 = 2,130.35/x
  3. Step 3: Cross multiply
    3,977.91x = 5,970.05 × 2,130.35
  4. Step 4: Simplify right side
    3,977.91x = 12,718,309.07
  5. Step 5: Solve for x
    x = 12,718,309.07/3,977.91
  6. Step 6: Final answer
    x = 3,197.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.