Home / 1,815.24-2,505.08-1,107.12

Finding the Fourth Proportional to 1,815.24, 2,505.08 and 1,107.12

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Solution

The fourth proportional to 1,815.24, 2,505.08 and 1,107.12 is: 1,527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.24 : 2,505.08 = 1,107.12 : x
  2. Step 2: Convert to fraction form
    1,815.24/2,505.08 = 1,107.12/x
  3. Step 3: Cross multiply
    1,815.24x = 2,505.08 × 1,107.12
  4. Step 4: Simplify right side
    1,815.24x = 2,773,418.63
  5. Step 5: Solve for x
    x = 2,773,418.63/1,815.24
  6. Step 6: Final answer
    x = 1,527.85

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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.