Home / 3,047.31-4,205.27-1,720.98

Finding the Fourth Proportional to 3,047.31, 4,205.27 and 1,720.98

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Solution

The fourth proportional to 3,047.31, 4,205.27 and 1,720.98 is: 2,374.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.31 : 4,205.27 = 1,720.98 : x
  2. Step 2: Convert to fraction form
    3,047.31/4,205.27 = 1,720.98/x
  3. Step 3: Cross multiply
    3,047.31x = 4,205.27 × 1,720.98
  4. Step 4: Simplify right side
    3,047.31x = 7,237,185.56
  5. Step 5: Solve for x
    x = 7,237,185.56/3,047.31
  6. Step 6: Final answer
    x = 2,374.94

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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.