Home / 2,290.50-3,157.65-1,628.87

Finding the Fourth Proportional to 2,290.50, 3,157.65 and 1,628.87

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Solution

The fourth proportional to 2,290.50, 3,157.65 and 1,628.87 is: 2,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.50 : 3,157.65 = 1,628.87 : x
  2. Step 2: Convert to fraction form
    2,290.50/3,157.65 = 1,628.87/x
  3. Step 3: Cross multiply
    2,290.50x = 3,157.65 × 1,628.87
  4. Step 4: Simplify right side
    2,290.50x = 5,143,385.57
  5. Step 5: Solve for x
    x = 5,143,385.57/2,290.50
  6. Step 6: Final answer
    x = 2,245.53

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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.