Home / 2,391.22-3,298.47-1,396.39

Finding the Fourth Proportional to 2,391.22, 3,298.47 and 1,396.39

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Solution

The fourth proportional to 2,391.22, 3,298.47 and 1,396.39 is: 1,926.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.22 : 3,298.47 = 1,396.39 : x
  2. Step 2: Convert to fraction form
    2,391.22/3,298.47 = 1,396.39/x
  3. Step 3: Cross multiply
    2,391.22x = 3,298.47 × 1,396.39
  4. Step 4: Simplify right side
    2,391.22x = 4,605,950.52
  5. Step 5: Solve for x
    x = 4,605,950.52/2,391.22
  6. Step 6: Final answer
    x = 1,926.19

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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.