Home / 2,236.18-3,084.27-1,438.78

Finding the Fourth Proportional to 2,236.18, 3,084.27 and 1,438.78

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Solution

The fourth proportional to 2,236.18, 3,084.27 and 1,438.78 is: 1,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.18 : 3,084.27 = 1,438.78 : x
  2. Step 2: Convert to fraction form
    2,236.18/3,084.27 = 1,438.78/x
  3. Step 3: Cross multiply
    2,236.18x = 3,084.27 × 1,438.78
  4. Step 4: Simplify right side
    2,236.18x = 4,437,585.99
  5. Step 5: Solve for x
    x = 4,437,585.99/2,236.18
  6. Step 6: Final answer
    x = 1,984.45

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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.