Home / 2,749.60-3,795.90-2,118.74

Finding the Fourth Proportional to 2,749.60, 3,795.90 and 2,118.74

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Solution

The fourth proportional to 2,749.60, 3,795.90 and 2,118.74 is: 2,924.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.60 : 3,795.90 = 2,118.74 : x
  2. Step 2: Convert to fraction form
    2,749.60/3,795.90 = 2,118.74/x
  3. Step 3: Cross multiply
    2,749.60x = 3,795.90 × 2,118.74
  4. Step 4: Simplify right side
    2,749.60x = 8,042,525.83
  5. Step 5: Solve for x
    x = 8,042,525.83/2,749.60
  6. Step 6: Final answer
    x = 2,924.98

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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.