Home / 1,426.32-2,135.37-906.91

Finding the Fourth Proportional to 1,426.32, 2,135.37 and 906.91

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Solution

The fourth proportional to 1,426.32, 2,135.37 and 906.91 is: 1,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.32 : 2,135.37 = 906.91 : x
  2. Step 2: Convert to fraction form
    1,426.32/2,135.37 = 906.91/x
  3. Step 3: Cross multiply
    1,426.32x = 2,135.37 × 906.91
  4. Step 4: Simplify right side
    1,426.32x = 1,936,583.07
  5. Step 5: Solve for x
    x = 1,936,583.07/1,426.32
  6. Step 6: Final answer
    x = 1,357.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.