Home / 5,161.39-7,122.36-2,803.48

Finding the Fourth Proportional to 5,161.39, 7,122.36 and 2,803.48

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Solution

The fourth proportional to 5,161.39, 7,122.36 and 2,803.48 is: 3,868.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.39 : 7,122.36 = 2,803.48 : x
  2. Step 2: Convert to fraction form
    5,161.39/7,122.36 = 2,803.48/x
  3. Step 3: Cross multiply
    5,161.39x = 7,122.36 × 2,803.48
  4. Step 4: Simplify right side
    5,161.39x = 19,967,386.52
  5. Step 5: Solve for x
    x = 19,967,386.52/5,161.39
  6. Step 6: Final answer
    x = 3,868.61

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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.