Home / 3,124.20-4,310.87-1,865.21

Finding the Fourth Proportional to 3,124.20, 4,310.87 and 1,865.21

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Solution

The fourth proportional to 3,124.20, 4,310.87 and 1,865.21 is: 2,573.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.20 : 4,310.87 = 1,865.21 : x
  2. Step 2: Convert to fraction form
    3,124.20/4,310.87 = 1,865.21/x
  3. Step 3: Cross multiply
    3,124.20x = 4,310.87 × 1,865.21
  4. Step 4: Simplify right side
    3,124.20x = 8,040,646.95
  5. Step 5: Solve for x
    x = 8,040,646.95/3,124.20
  6. Step 6: Final answer
    x = 2,573.67

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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.