Home / 3,278.70-4,523.76-2,100.15

Finding the Fourth Proportional to 3,278.70, 4,523.76 and 2,100.15

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Solution

The fourth proportional to 3,278.70, 4,523.76 and 2,100.15 is: 2,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.70 : 4,523.76 = 2,100.15 : x
  2. Step 2: Convert to fraction form
    3,278.70/4,523.76 = 2,100.15/x
  3. Step 3: Cross multiply
    3,278.70x = 4,523.76 × 2,100.15
  4. Step 4: Simplify right side
    3,278.70x = 9,500,574.56
  5. Step 5: Solve for x
    x = 9,500,574.56/3,278.70
  6. Step 6: Final answer
    x = 2,897.67

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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.