Home / 2,485.09-3,428.01-2,135.63

Finding the Fourth Proportional to 2,485.09, 3,428.01 and 2,135.63

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Solution

The fourth proportional to 2,485.09, 3,428.01 and 2,135.63 is: 2,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.09 : 3,428.01 = 2,135.63 : x
  2. Step 2: Convert to fraction form
    2,485.09/3,428.01 = 2,135.63/x
  3. Step 3: Cross multiply
    2,485.09x = 3,428.01 × 2,135.63
  4. Step 4: Simplify right side
    2,485.09x = 7,320,952.10
  5. Step 5: Solve for x
    x = 7,320,952.10/2,485.09
  6. Step 6: Final answer
    x = 2,945.95

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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.