Home / 1,853.26-2,778.57-928.15

Finding the Fourth Proportional to 1,853.26, 2,778.57 and 928.15

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Solution

The fourth proportional to 1,853.26, 2,778.57 and 928.15 is: 1,391.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.26 : 2,778.57 = 928.15 : x
  2. Step 2: Convert to fraction form
    1,853.26/2,778.57 = 928.15/x
  3. Step 3: Cross multiply
    1,853.26x = 2,778.57 × 928.15
  4. Step 4: Simplify right side
    1,853.26x = 2,578,929.75
  5. Step 5: Solve for x
    x = 2,578,929.75/1,853.26
  6. Step 6: Final answer
    x = 1,391.57

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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.