Home / 3,047.50-4,205.34-1,720.94

Finding the Fourth Proportional to 3,047.50, 4,205.34 and 1,720.94

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Solution

The fourth proportional to 3,047.50, 4,205.34 and 1,720.94 is: 2,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.50 : 4,205.34 = 1,720.94 : x
  2. Step 2: Convert to fraction form
    3,047.50/4,205.34 = 1,720.94/x
  3. Step 3: Cross multiply
    3,047.50x = 4,205.34 × 1,720.94
  4. Step 4: Simplify right side
    3,047.50x = 7,237,137.82
  5. Step 5: Solve for x
    x = 7,237,137.82/3,047.50
  6. Step 6: Final answer
    x = 2,374.78

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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.