Home / 1,433.24-2,151.84-740.39

Finding the Fourth Proportional to 1,433.24, 2,151.84 and 740.39

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Solution

The fourth proportional to 1,433.24, 2,151.84 and 740.39 is: 1,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.24 : 2,151.84 = 740.39 : x
  2. Step 2: Convert to fraction form
    1,433.24/2,151.84 = 740.39/x
  3. Step 3: Cross multiply
    1,433.24x = 2,151.84 × 740.39
  4. Step 4: Simplify right side
    1,433.24x = 1,593,202.86
  5. Step 5: Solve for x
    x = 1,593,202.86/1,433.24
  6. Step 6: Final answer
    x = 1,111.61

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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.