Home / 3,128.50-4,694.37-1,589.50

Finding the Fourth Proportional to 3,128.50, 4,694.37 and 1,589.50

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Solution

The fourth proportional to 3,128.50, 4,694.37 and 1,589.50 is: 2,385.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.50 : 4,694.37 = 1,589.50 : x
  2. Step 2: Convert to fraction form
    3,128.50/4,694.37 = 1,589.50/x
  3. Step 3: Cross multiply
    3,128.50x = 4,694.37 × 1,589.50
  4. Step 4: Simplify right side
    3,128.50x = 7,461,701.12
  5. Step 5: Solve for x
    x = 7,461,701.12/3,128.50
  6. Step 6: Final answer
    x = 2,385.07

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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.