Home / 5,161.21-7,122.46-2,803.35

Finding the Fourth Proportional to 5,161.21, 7,122.46 and 2,803.35

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Solution

The fourth proportional to 5,161.21, 7,122.46 and 2,803.35 is: 3,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.21 : 7,122.46 = 2,803.35 : x
  2. Step 2: Convert to fraction form
    5,161.21/7,122.46 = 2,803.35/x
  3. Step 3: Cross multiply
    5,161.21x = 7,122.46 × 2,803.35
  4. Step 4: Simplify right side
    5,161.21x = 19,966,734.22
  5. Step 5: Solve for x
    x = 19,966,734.22/5,161.21
  6. Step 6: Final answer
    x = 3,868.62

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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.