Home / 3,173.36-4,378.80-2,125.76

Finding the Fourth Proportional to 3,173.36, 4,378.80 and 2,125.76

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Solution

The fourth proportional to 3,173.36, 4,378.80 and 2,125.76 is: 2,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.36 : 4,378.80 = 2,125.76 : x
  2. Step 2: Convert to fraction form
    3,173.36/4,378.80 = 2,125.76/x
  3. Step 3: Cross multiply
    3,173.36x = 4,378.80 × 2,125.76
  4. Step 4: Simplify right side
    3,173.36x = 9,308,277.89
  5. Step 5: Solve for x
    x = 9,308,277.89/3,173.36
  6. Step 6: Final answer
    x = 2,933.26

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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.