Home / 5,085.28-7,628.70-2,162.80

Finding the Fourth Proportional to 5,085.28, 7,628.70 and 2,162.80

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Solution

The fourth proportional to 5,085.28, 7,628.70 and 2,162.80 is: 3,244.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.28 : 7,628.70 = 2,162.80 : x
  2. Step 2: Convert to fraction form
    5,085.28/7,628.70 = 2,162.80/x
  3. Step 3: Cross multiply
    5,085.28x = 7,628.70 × 2,162.80
  4. Step 4: Simplify right side
    5,085.28x = 16,499,352.36
  5. Step 5: Solve for x
    x = 16,499,352.36/5,085.28
  6. Step 6: Final answer
    x = 3,244.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.