Home / 3,480.42-4,802.97-1,988.80

Finding the Fourth Proportional to 3,480.42, 4,802.97 and 1,988.80

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Solution

The fourth proportional to 3,480.42, 4,802.97 and 1,988.80 is: 2,744.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.42 : 4,802.97 = 1,988.80 : x
  2. Step 2: Convert to fraction form
    3,480.42/4,802.97 = 1,988.80/x
  3. Step 3: Cross multiply
    3,480.42x = 4,802.97 × 1,988.80
  4. Step 4: Simplify right side
    3,480.42x = 9,552,146.74
  5. Step 5: Solve for x
    x = 9,552,146.74/3,480.42
  6. Step 6: Final answer
    x = 2,744.54

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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.