Home / 3,176.88-4,384.35-1,918.59

Finding the Fourth Proportional to 3,176.88, 4,384.35 and 1,918.59

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Solution

The fourth proportional to 3,176.88, 4,384.35 and 1,918.59 is: 2,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,176.88 : 4,384.35 = 1,918.59 : x
  2. Step 2: Convert to fraction form
    3,176.88/4,384.35 = 1,918.59/x
  3. Step 3: Cross multiply
    3,176.88x = 4,384.35 × 1,918.59
  4. Step 4: Simplify right side
    3,176.88x = 8,411,770.07
  5. Step 5: Solve for x
    x = 8,411,770.07/3,176.88
  6. Step 6: Final answer
    x = 2,647.81

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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.