Home / 3,047.40-4,570.98-2,120.28

Finding the Fourth Proportional to 3,047.40, 4,570.98 and 2,120.28

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Solution

The fourth proportional to 3,047.40, 4,570.98 and 2,120.28 is: 3,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.40 : 4,570.98 = 2,120.28 : x
  2. Step 2: Convert to fraction form
    3,047.40/4,570.98 = 2,120.28/x
  3. Step 3: Cross multiply
    3,047.40x = 4,570.98 × 2,120.28
  4. Step 4: Simplify right side
    3,047.40x = 9,691,757.47
  5. Step 5: Solve for x
    x = 9,691,757.47/3,047.40
  6. Step 6: Final answer
    x = 3,180.34

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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.