Home / 2,391.68-3,296.76-2,190.80

Finding the Fourth Proportional to 2,391.68, 3,296.76 and 2,190.80

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Solution

The fourth proportional to 2,391.68, 3,296.76 and 2,190.80 is: 3,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.68 : 3,296.76 = 2,190.80 : x
  2. Step 2: Convert to fraction form
    2,391.68/3,296.76 = 2,190.80/x
  3. Step 3: Cross multiply
    2,391.68x = 3,296.76 × 2,190.80
  4. Step 4: Simplify right side
    2,391.68x = 7,222,541.81
  5. Step 5: Solve for x
    x = 7,222,541.81/2,391.68
  6. Step 6: Final answer
    x = 3,019.86

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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.