Home / 3,047.09-4,205.06-1,720.80

Finding the Fourth Proportional to 3,047.09, 4,205.06 and 1,720.80

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Solution

The fourth proportional to 3,047.09, 4,205.06 and 1,720.80 is: 2,374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.09 : 4,205.06 = 1,720.80 : x
  2. Step 2: Convert to fraction form
    3,047.09/4,205.06 = 1,720.80/x
  3. Step 3: Cross multiply
    3,047.09x = 4,205.06 × 1,720.80
  4. Step 4: Simplify right side
    3,047.09x = 7,236,058.64
  5. Step 5: Solve for x
    x = 7,236,058.64/3,047.09
  6. Step 6: Final answer
    x = 2,374.75

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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.