Home / 3,125.80-4,688.70-1,829.80

Finding the Fourth Proportional to 3,125.80, 4,688.70 and 1,829.80

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Solution

The fourth proportional to 3,125.80, 4,688.70 and 1,829.80 is: 2,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.80 : 4,688.70 = 1,829.80 : x
  2. Step 2: Convert to fraction form
    3,125.80/4,688.70 = 1,829.80/x
  3. Step 3: Cross multiply
    3,125.80x = 4,688.70 × 1,829.80
  4. Step 4: Simplify right side
    3,125.80x = 8,579,383.26
  5. Step 5: Solve for x
    x = 8,579,383.26/3,125.80
  6. Step 6: Final answer
    x = 2,744.70

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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.