Home / 2,335.35-3,221.36-1,390.51

Finding the Fourth Proportional to 2,335.35, 3,221.36 and 1,390.51

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Solution

The fourth proportional to 2,335.35, 3,221.36 and 1,390.51 is: 1,918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.35 : 3,221.36 = 1,390.51 : x
  2. Step 2: Convert to fraction form
    2,335.35/3,221.36 = 1,390.51/x
  3. Step 3: Cross multiply
    2,335.35x = 3,221.36 × 1,390.51
  4. Step 4: Simplify right side
    2,335.35x = 4,479,318.29
  5. Step 5: Solve for x
    x = 4,479,318.29/2,335.35
  6. Step 6: Final answer
    x = 1,918.05

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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.