Home / 1,485.38-2,049.09-1,065.80

Finding the Fourth Proportional to 1,485.38, 2,049.09 and 1,065.80

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Solution

The fourth proportional to 1,485.38, 2,049.09 and 1,065.80 is: 1,470.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.38 : 2,049.09 = 1,065.80 : x
  2. Step 2: Convert to fraction form
    1,485.38/2,049.09 = 1,065.80/x
  3. Step 3: Cross multiply
    1,485.38x = 2,049.09 × 1,065.80
  4. Step 4: Simplify right side
    1,485.38x = 2,183,920.12
  5. Step 5: Solve for x
    x = 2,183,920.12/1,485.38
  6. Step 6: Final answer
    x = 1,470.28

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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.