Home / 3,405.06-4,698.83-1,988.82

Finding the Fourth Proportional to 3,405.06, 4,698.83 and 1,988.82

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Solution

The fourth proportional to 3,405.06, 4,698.83 and 1,988.82 is: 2,744.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.06 : 4,698.83 = 1,988.82 : x
  2. Step 2: Convert to fraction form
    3,405.06/4,698.83 = 1,988.82/x
  3. Step 3: Cross multiply
    3,405.06x = 4,698.83 × 1,988.82
  4. Step 4: Simplify right side
    3,405.06x = 9,345,117.14
  5. Step 5: Solve for x
    x = 9,345,117.14/3,405.06
  6. Step 6: Final answer
    x = 2,744.48

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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.