Home / 3,028.07-4,178.79-1,665.40

Finding the Fourth Proportional to 3,028.07, 4,178.79 and 1,665.40

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Solution

The fourth proportional to 3,028.07, 4,178.79 and 1,665.40 is: 2,298.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.07 : 4,178.79 = 1,665.40 : x
  2. Step 2: Convert to fraction form
    3,028.07/4,178.79 = 1,665.40/x
  3. Step 3: Cross multiply
    3,028.07x = 4,178.79 × 1,665.40
  4. Step 4: Simplify right side
    3,028.07x = 6,959,327.65
  5. Step 5: Solve for x
    x = 6,959,327.65/3,028.07
  6. Step 6: Final answer
    x = 2,298.27

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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.