Home / 2,780.05-4,170.07-1,684.72

Finding the Fourth Proportional to 2,780.05, 4,170.07 and 1,684.72

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Solution

The fourth proportional to 2,780.05, 4,170.07 and 1,684.72 is: 2,527.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.05 : 4,170.07 = 1,684.72 : x
  2. Step 2: Convert to fraction form
    2,780.05/4,170.07 = 1,684.72/x
  3. Step 3: Cross multiply
    2,780.05x = 4,170.07 × 1,684.72
  4. Step 4: Simplify right side
    2,780.05x = 7,025,406.54
  5. Step 5: Solve for x
    x = 7,025,406.54/2,780.05
  6. Step 6: Final answer
    x = 2,527.08

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Similar ratio
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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.