Home / 1,039.08-1,433.28-743.84

Finding the Fourth Proportional to 1,039.08, 1,433.28 and 743.84

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Solution

The fourth proportional to 1,039.08, 1,433.28 and 743.84 is: 1,026.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.08 : 1,433.28 = 743.84 : x
  2. Step 2: Convert to fraction form
    1,039.08/1,433.28 = 743.84/x
  3. Step 3: Cross multiply
    1,039.08x = 1,433.28 × 743.84
  4. Step 4: Simplify right side
    1,039.08x = 1,066,131.00
  5. Step 5: Solve for x
    x = 1,066,131.00/1,039.08
  6. Step 6: Final answer
    x = 1,026.03

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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.