Home / 1,424.12-2,135.10-1,268.60

Finding the Fourth Proportional to 1,424.12, 2,135.10 and 1,268.60

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Solution

The fourth proportional to 1,424.12, 2,135.10 and 1,268.60 is: 1,901.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.12 : 2,135.10 = 1,268.60 : x
  2. Step 2: Convert to fraction form
    1,424.12/2,135.10 = 1,268.60/x
  3. Step 3: Cross multiply
    1,424.12x = 2,135.10 × 1,268.60
  4. Step 4: Simplify right side
    1,424.12x = 2,708,587.86
  5. Step 5: Solve for x
    x = 2,708,587.86/1,424.12
  6. Step 6: Final answer
    x = 1,901.94

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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.