Home / 3,119.41-4,303.29-2,278.72

Finding the Fourth Proportional to 3,119.41, 4,303.29 and 2,278.72

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Solution

The fourth proportional to 3,119.41, 4,303.29 and 2,278.72 is: 3,143.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.41 : 4,303.29 = 2,278.72 : x
  2. Step 2: Convert to fraction form
    3,119.41/4,303.29 = 2,278.72/x
  3. Step 3: Cross multiply
    3,119.41x = 4,303.29 × 2,278.72
  4. Step 4: Simplify right side
    3,119.41x = 9,805,992.99
  5. Step 5: Solve for x
    x = 9,805,992.99/3,119.41
  6. Step 6: Final answer
    x = 3,143.54

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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.