Home / 2,106.81-3,160.92-1,325.90

Finding the Fourth Proportional to 2,106.81, 3,160.92 and 1,325.90

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Solution

The fourth proportional to 2,106.81, 3,160.92 and 1,325.90 is: 1,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.81 : 3,160.92 = 1,325.90 : x
  2. Step 2: Convert to fraction form
    2,106.81/3,160.92 = 1,325.90/x
  3. Step 3: Cross multiply
    2,106.81x = 3,160.92 × 1,325.90
  4. Step 4: Simplify right side
    2,106.81x = 4,191,048.02
  5. Step 5: Solve for x
    x = 4,191,048.02/2,106.81
  6. Step 6: Final answer
    x = 1,989.29

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1.5x scale

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.