Home / 2,412.90-3,618.81-1,113.12

Finding the Fourth Proportional to 2,412.90, 3,618.81 and 1,113.12

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Solution

The fourth proportional to 2,412.90, 3,618.81 and 1,113.12 is: 1,669.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.90 : 3,618.81 = 1,113.12 : x
  2. Step 2: Convert to fraction form
    2,412.90/3,618.81 = 1,113.12/x
  3. Step 3: Cross multiply
    2,412.90x = 3,618.81 × 1,113.12
  4. Step 4: Simplify right side
    2,412.90x = 4,028,169.79
  5. Step 5: Solve for x
    x = 4,028,169.79/2,412.90
  6. Step 6: Final answer
    x = 1,669.43

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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.