Home / 1,806.12-2,492.78-1,107.63

Finding the Fourth Proportional to 1,806.12, 2,492.78 and 1,107.63

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Solution

The fourth proportional to 1,806.12, 2,492.78 and 1,107.63 is: 1,528.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.12 : 2,492.78 = 1,107.63 : x
  2. Step 2: Convert to fraction form
    1,806.12/2,492.78 = 1,107.63/x
  3. Step 3: Cross multiply
    1,806.12x = 2,492.78 × 1,107.63
  4. Step 4: Simplify right side
    1,806.12x = 2,761,072.37
  5. Step 5: Solve for x
    x = 2,761,072.37/1,806.12
  6. Step 6: Final answer
    x = 1,528.73

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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.