Home / 2,790.90-3,849.60-1,794.60

Finding the Fourth Proportional to 2,790.90, 3,849.60 and 1,794.60

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Solution

The fourth proportional to 2,790.90, 3,849.60 and 1,794.60 is: 2,475.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.90 : 3,849.60 = 1,794.60 : x
  2. Step 2: Convert to fraction form
    2,790.90/3,849.60 = 1,794.60/x
  3. Step 3: Cross multiply
    2,790.90x = 3,849.60 × 1,794.60
  4. Step 4: Simplify right side
    2,790.90x = 6,908,492.16
  5. Step 5: Solve for x
    x = 6,908,492.16/2,790.90
  6. Step 6: Final answer
    x = 2,475.36

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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.