Home / 2,485.98-3,430.82-1,645.23

Finding the Fourth Proportional to 2,485.98, 3,430.82 and 1,645.23

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Solution

The fourth proportional to 2,485.98, 3,430.82 and 1,645.23 is: 2,270.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.98 : 3,430.82 = 1,645.23 : x
  2. Step 2: Convert to fraction form
    2,485.98/3,430.82 = 1,645.23/x
  3. Step 3: Cross multiply
    2,485.98x = 3,430.82 × 1,645.23
  4. Step 4: Simplify right side
    2,485.98x = 5,644,487.99
  5. Step 5: Solve for x
    x = 5,644,487.99/2,485.98
  6. Step 6: Final answer
    x = 2,270.53

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1.5x scale

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.