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Finding the Fourth Proportional to 3,205.69, 4,810.69 and 1,125.70

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Solution

The fourth proportional to 3,205.69, 4,810.69 and 1,125.70 is: 1,689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.69 : 4,810.69 = 1,125.70 : x
  2. Step 2: Convert to fraction form
    3,205.69/4,810.69 = 1,125.70/x
  3. Step 3: Cross multiply
    3,205.69x = 4,810.69 × 1,125.70
  4. Step 4: Simplify right side
    3,205.69x = 5,415,393.73
  5. Step 5: Solve for x
    x = 5,415,393.73/3,205.69
  6. Step 6: Final answer
    x = 1,689.31

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1.5x scale

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.