Home / 1,890.16-2,828.26-1,147.12

Finding the Fourth Proportional to 1,890.16, 2,828.26 and 1,147.12

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Solution

The fourth proportional to 1,890.16, 2,828.26 and 1,147.12 is: 1,716.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.16 : 2,828.26 = 1,147.12 : x
  2. Step 2: Convert to fraction form
    1,890.16/2,828.26 = 1,147.12/x
  3. Step 3: Cross multiply
    1,890.16x = 2,828.26 × 1,147.12
  4. Step 4: Simplify right side
    1,890.16x = 3,244,353.61
  5. Step 5: Solve for x
    x = 3,244,353.61/1,890.16
  6. Step 6: Final answer
    x = 1,716.44

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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.