Home / 3,713.70-5,125.60-2,120.34

Finding the Fourth Proportional to 3,713.70, 5,125.60 and 2,120.34

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Solution

The fourth proportional to 3,713.70, 5,125.60 and 2,120.34 is: 2,926.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,713.70 : 5,125.60 = 2,120.34 : x
  2. Step 2: Convert to fraction form
    3,713.70/5,125.60 = 2,120.34/x
  3. Step 3: Cross multiply
    3,713.70x = 5,125.60 × 2,120.34
  4. Step 4: Simplify right side
    3,713.70x = 10,868,014.70
  5. Step 5: Solve for x
    x = 10,868,014.70/3,713.70
  6. Step 6: Final answer
    x = 2,926.47

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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.