Home / 5,028.40-6,939.62-2,790.51

Finding the Fourth Proportional to 5,028.40, 6,939.62 and 2,790.51

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Solution

The fourth proportional to 5,028.40, 6,939.62 and 2,790.51 is: 3,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.40 : 6,939.62 = 2,790.51 : x
  2. Step 2: Convert to fraction form
    5,028.40/6,939.62 = 2,790.51/x
  3. Step 3: Cross multiply
    5,028.40x = 6,939.62 × 2,790.51
  4. Step 4: Simplify right side
    5,028.40x = 19,365,079.01
  5. Step 5: Solve for x
    x = 19,365,079.01/5,028.40
  6. Step 6: Final answer
    x = 3,851.14

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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.