Home / 2,790.35-3,849.05-1,728.28

Finding the Fourth Proportional to 2,790.35, 3,849.05 and 1,728.28

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Solution

The fourth proportional to 2,790.35, 3,849.05 and 1,728.28 is: 2,384.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.35 : 3,849.05 = 1,728.28 : x
  2. Step 2: Convert to fraction form
    2,790.35/3,849.05 = 1,728.28/x
  3. Step 3: Cross multiply
    2,790.35x = 3,849.05 × 1,728.28
  4. Step 4: Simplify right side
    2,790.35x = 6,652,236.13
  5. Step 5: Solve for x
    x = 6,652,236.13/2,790.35
  6. Step 6: Final answer
    x = 2,384.02

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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.