Home / 2,335.37-3,222.11-1,390.68

Finding the Fourth Proportional to 2,335.37, 3,222.11 and 1,390.68

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Solution

The fourth proportional to 2,335.37, 3,222.11 and 1,390.68 is: 1,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.37 : 3,222.11 = 1,390.68 : x
  2. Step 2: Convert to fraction form
    2,335.37/3,222.11 = 1,390.68/x
  3. Step 3: Cross multiply
    2,335.37x = 3,222.11 × 1,390.68
  4. Step 4: Simplify right side
    2,335.37x = 4,480,923.93
  5. Step 5: Solve for x
    x = 4,480,923.93/2,335.37
  6. Step 6: Final answer
    x = 1,918.72

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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.