Home / 1,812.22-2,499.66-1,438.61

Finding the Fourth Proportional to 1,812.22, 2,499.66 and 1,438.61

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Solution

The fourth proportional to 1,812.22, 2,499.66 and 1,438.61 is: 1,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.22 : 2,499.66 = 1,438.61 : x
  2. Step 2: Convert to fraction form
    1,812.22/2,499.66 = 1,438.61/x
  3. Step 3: Cross multiply
    1,812.22x = 2,499.66 × 1,438.61
  4. Step 4: Simplify right side
    1,812.22x = 3,596,023.37
  5. Step 5: Solve for x
    x = 3,596,023.37/1,812.22
  6. Step 6: Final answer
    x = 1,984.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.