Home / 2,381.05-3,285.66-1,386.37

Finding the Fourth Proportional to 2,381.05, 3,285.66 and 1,386.37

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Solution

The fourth proportional to 2,381.05, 3,285.66 and 1,386.37 is: 1,913.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.05 : 3,285.66 = 1,386.37 : x
  2. Step 2: Convert to fraction form
    2,381.05/3,285.66 = 1,386.37/x
  3. Step 3: Cross multiply
    2,381.05x = 3,285.66 × 1,386.37
  4. Step 4: Simplify right side
    2,381.05x = 4,555,140.45
  5. Step 5: Solve for x
    x = 4,555,140.45/2,381.05
  6. Step 6: Final answer
    x = 1,913.08

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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.