Home / 3,037.50-4,191.75-1,989.90

Finding the Fourth Proportional to 3,037.50, 4,191.75 and 1,989.90

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Solution

The fourth proportional to 3,037.50, 4,191.75 and 1,989.90 is: 2,746.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,037.50 : 4,191.75 = 1,989.90 : x
  2. Step 2: Convert to fraction form
    3,037.50/4,191.75 = 1,989.90/x
  3. Step 3: Cross multiply
    3,037.50x = 4,191.75 × 1,989.90
  4. Step 4: Simplify right side
    3,037.50x = 8,341,163.33
  5. Step 5: Solve for x
    x = 8,341,163.33/3,037.50
  6. Step 6: Final answer
    x = 2,746.06

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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.