Home / 3,448.50-5,173.77-1,988.70

Finding the Fourth Proportional to 3,448.50, 5,173.77 and 1,988.70

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Solution

The fourth proportional to 3,448.50, 5,173.77 and 1,988.70 is: 2,983.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,448.50 : 5,173.77 = 1,988.70 : x
  2. Step 2: Convert to fraction form
    3,448.50/5,173.77 = 1,988.70/x
  3. Step 3: Cross multiply
    3,448.50x = 5,173.77 × 1,988.70
  4. Step 4: Simplify right side
    3,448.50x = 10,289,076.40
  5. Step 5: Solve for x
    x = 10,289,076.40/3,448.50
  6. Step 6: Final answer
    x = 2,983.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.