Home / 2,412.21-3,618.32-1,113.51

Finding the Fourth Proportional to 2,412.21, 3,618.32 and 1,113.51

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Solution

The fourth proportional to 2,412.21, 3,618.32 and 1,113.51 is: 1,670.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.21 : 3,618.32 = 1,113.51 : x
  2. Step 2: Convert to fraction form
    2,412.21/3,618.32 = 1,113.51/x
  3. Step 3: Cross multiply
    2,412.21x = 3,618.32 × 1,113.51
  4. Step 4: Simplify right side
    2,412.21x = 4,029,029.94
  5. Step 5: Solve for x
    x = 4,029,029.94/2,412.21
  6. Step 6: Final answer
    x = 1,670.27

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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.