Home / 2,307.78-3,185.19-1,608.75

Finding the Fourth Proportional to 2,307.78, 3,185.19 and 1,608.75

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Solution

The fourth proportional to 2,307.78, 3,185.19 and 1,608.75 is: 2,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,307.78 : 3,185.19 = 1,608.75 : x
  2. Step 2: Convert to fraction form
    2,307.78/3,185.19 = 1,608.75/x
  3. Step 3: Cross multiply
    2,307.78x = 3,185.19 × 1,608.75
  4. Step 4: Simplify right side
    2,307.78x = 5,124,174.41
  5. Step 5: Solve for x
    x = 5,124,174.41/2,307.78
  6. Step 6: Final answer
    x = 2,220.39

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Half scale
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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.