Home / 5,161.31-7,122.61-2,803.50

Finding the Fourth Proportional to 5,161.31, 7,122.61 and 2,803.50

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Solution

The fourth proportional to 5,161.31, 7,122.61 and 2,803.50 is: 3,868.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.31 : 7,122.61 = 2,803.50 : x
  2. Step 2: Convert to fraction form
    5,161.31/7,122.61 = 2,803.50/x
  3. Step 3: Cross multiply
    5,161.31x = 7,122.61 × 2,803.50
  4. Step 4: Simplify right side
    5,161.31x = 19,968,237.14
  5. Step 5: Solve for x
    x = 19,968,237.14/5,161.31
  6. Step 6: Final answer
    x = 3,868.83

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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.