Home / 3,480.89-4,802.93-1,989.30

Finding the Fourth Proportional to 3,480.89, 4,802.93 and 1,989.30

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Solution

The fourth proportional to 3,480.89, 4,802.93 and 1,989.30 is: 2,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.89 : 4,802.93 = 1,989.30 : x
  2. Step 2: Convert to fraction form
    3,480.89/4,802.93 = 1,989.30/x
  3. Step 3: Cross multiply
    3,480.89x = 4,802.93 × 1,989.30
  4. Step 4: Simplify right side
    3,480.89x = 9,554,468.65
  5. Step 5: Solve for x
    x = 9,554,468.65/3,480.89
  6. Step 6: Final answer
    x = 2,744.83

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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.