Home / 4,120.09-5,681.17-3,173.78

Finding the Fourth Proportional to 4,120.09, 5,681.17 and 3,173.78

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Solution

The fourth proportional to 4,120.09, 5,681.17 and 3,173.78 is: 4,376.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.09 : 5,681.17 = 3,173.78 : x
  2. Step 2: Convert to fraction form
    4,120.09/5,681.17 = 3,173.78/x
  3. Step 3: Cross multiply
    4,120.09x = 5,681.17 × 3,173.78
  4. Step 4: Simplify right side
    4,120.09x = 18,030,783.72
  5. Step 5: Solve for x
    x = 18,030,783.72/4,120.09
  6. Step 6: Final answer
    x = 4,376.31

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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.