Home / 2,106.36-3,158.10-1,131.48

Finding the Fourth Proportional to 2,106.36, 3,158.10 and 1,131.48

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Solution

The fourth proportional to 2,106.36, 3,158.10 and 1,131.48 is: 1,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.36 : 3,158.10 = 1,131.48 : x
  2. Step 2: Convert to fraction form
    2,106.36/3,158.10 = 1,131.48/x
  3. Step 3: Cross multiply
    2,106.36x = 3,158.10 × 1,131.48
  4. Step 4: Simplify right side
    2,106.36x = 3,573,326.99
  5. Step 5: Solve for x
    x = 3,573,326.99/2,106.36
  6. Step 6: Final answer
    x = 1,696.45

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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.