Home / 2,790.51-3,851.21-1,783.15

Finding the Fourth Proportional to 2,790.51, 3,851.21 and 1,783.15

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Solution

The fourth proportional to 2,790.51, 3,851.21 and 1,783.15 is: 2,460.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.51 : 3,851.21 = 1,783.15 : x
  2. Step 2: Convert to fraction form
    2,790.51/3,851.21 = 1,783.15/x
  3. Step 3: Cross multiply
    2,790.51x = 3,851.21 × 1,783.15
  4. Step 4: Simplify right side
    2,790.51x = 6,867,279.94
  5. Step 5: Solve for x
    x = 6,867,279.94/2,790.51
  6. Step 6: Final answer
    x = 2,460.94

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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.