Home / 1,033.28-1,415.20-1,007.36

Finding the Fourth Proportional to 1,033.28, 1,415.20 and 1,007.36

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Solution

The fourth proportional to 1,033.28, 1,415.20 and 1,007.36 is: 1,379.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.28 : 1,415.20 = 1,007.36 : x
  2. Step 2: Convert to fraction form
    1,033.28/1,415.20 = 1,007.36/x
  3. Step 3: Cross multiply
    1,033.28x = 1,415.20 × 1,007.36
  4. Step 4: Simplify right side
    1,033.28x = 1,425,615.87
  5. Step 5: Solve for x
    x = 1,425,615.87/1,033.28
  6. Step 6: Final answer
    x = 1,379.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.