Home / 7,180.75-10,775.40-3,285.46

Finding the Fourth Proportional to 7,180.75, 10,775.40 and 3,285.46

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Solution

The fourth proportional to 7,180.75, 10,775.40 and 3,285.46 is: 4,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.75 : 10,775.40 = 3,285.46 : x
  2. Step 2: Convert to fraction form
    7,180.75/10,775.40 = 3,285.46/x
  3. Step 3: Cross multiply
    7,180.75x = 10,775.40 × 3,285.46
  4. Step 4: Simplify right side
    7,180.75x = 35,402,145.68
  5. Step 5: Solve for x
    x = 35,402,145.68/7,180.75
  6. Step 6: Final answer
    x = 4,930.15

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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.