Home / 2,845.98-3,925.08-2,181.60

Finding the Fourth Proportional to 2,845.98, 3,925.08 and 2,181.60

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Solution

The fourth proportional to 2,845.98, 3,925.08 and 2,181.60 is: 3,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.98 : 3,925.08 = 2,181.60 : x
  2. Step 2: Convert to fraction form
    2,845.98/3,925.08 = 2,181.60/x
  3. Step 3: Cross multiply
    2,845.98x = 3,925.08 × 2,181.60
  4. Step 4: Simplify right side
    2,845.98x = 8,562,954.53
  5. Step 5: Solve for x
    x = 8,562,954.53/2,845.98
  6. Step 6: Final answer
    x = 3,008.79

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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.