Home / 2,129.36-2,919.34-2,090.48

Finding the Fourth Proportional to 2,129.36, 2,919.34 and 2,090.48

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Solution

The fourth proportional to 2,129.36, 2,919.34 and 2,090.48 is: 2,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.36 : 2,919.34 = 2,090.48 : x
  2. Step 2: Convert to fraction form
    2,129.36/2,919.34 = 2,090.48/x
  3. Step 3: Cross multiply
    2,129.36x = 2,919.34 × 2,090.48
  4. Step 4: Simplify right side
    2,129.36x = 6,102,821.88
  5. Step 5: Solve for x
    x = 6,102,821.88/2,129.36
  6. Step 6: Final answer
    x = 2,866.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.