Home / 3,351.76-4,625.40-2,172.80

Finding the Fourth Proportional to 3,351.76, 4,625.40 and 2,172.80

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Solution

The fourth proportional to 3,351.76, 4,625.40 and 2,172.80 is: 2,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,351.76 : 4,625.40 = 2,172.80 : x
  2. Step 2: Convert to fraction form
    3,351.76/4,625.40 = 2,172.80/x
  3. Step 3: Cross multiply
    3,351.76x = 4,625.40 × 2,172.80
  4. Step 4: Simplify right side
    3,351.76x = 10,050,069.12
  5. Step 5: Solve for x
    x = 10,050,069.12/3,351.76
  6. Step 6: Final answer
    x = 2,998.45

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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.