Home / 2,201.91-3,036.95-1,405.47

Finding the Fourth Proportional to 2,201.91, 3,036.95 and 1,405.47

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Solution

The fourth proportional to 2,201.91, 3,036.95 and 1,405.47 is: 1,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.91 : 3,036.95 = 1,405.47 : x
  2. Step 2: Convert to fraction form
    2,201.91/3,036.95 = 1,405.47/x
  3. Step 3: Cross multiply
    2,201.91x = 3,036.95 × 1,405.47
  4. Step 4: Simplify right side
    2,201.91x = 4,268,342.12
  5. Step 5: Solve for x
    x = 4,268,342.12/2,201.91
  6. Step 6: Final answer
    x = 1,938.47

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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.