Home / 3,406.16-5,109.64-1,215.10

Finding the Fourth Proportional to 3,406.16, 5,109.64 and 1,215.10

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Solution

The fourth proportional to 3,406.16, 5,109.64 and 1,215.10 is: 1,822.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,406.16 : 5,109.64 = 1,215.10 : x
  2. Step 2: Convert to fraction form
    3,406.16/5,109.64 = 1,215.10/x
  3. Step 3: Cross multiply
    3,406.16x = 5,109.64 × 1,215.10
  4. Step 4: Simplify right side
    3,406.16x = 6,208,723.56
  5. Step 5: Solve for x
    x = 6,208,723.56/3,406.16
  6. Step 6: Final answer
    x = 1,822.79

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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.