Home / 3,178.41-4,386.24-1,762.12

Finding the Fourth Proportional to 3,178.41, 4,386.24 and 1,762.12

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Solution

The fourth proportional to 3,178.41, 4,386.24 and 1,762.12 is: 2,431.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.41 : 4,386.24 = 1,762.12 : x
  2. Step 2: Convert to fraction form
    3,178.41/4,386.24 = 1,762.12/x
  3. Step 3: Cross multiply
    3,178.41x = 4,386.24 × 1,762.12
  4. Step 4: Simplify right side
    3,178.41x = 7,729,069.94
  5. Step 5: Solve for x
    x = 7,729,069.94/3,178.41
  6. Step 6: Final answer
    x = 2,431.74

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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.