Home / 3,485.35-4,809.73-2,159.38

Finding the Fourth Proportional to 3,485.35, 4,809.73 and 2,159.38

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Solution

The fourth proportional to 3,485.35, 4,809.73 and 2,159.38 is: 2,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.35 : 4,809.73 = 2,159.38 : x
  2. Step 2: Convert to fraction form
    3,485.35/4,809.73 = 2,159.38/x
  3. Step 3: Cross multiply
    3,485.35x = 4,809.73 × 2,159.38
  4. Step 4: Simplify right side
    3,485.35x = 10,385,999.92
  5. Step 5: Solve for x
    x = 10,385,999.92/3,485.35
  6. Step 6: Final answer
    x = 2,979.91

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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.