Home / 4,285.85-6,421.74-2,638.92

Finding the Fourth Proportional to 4,285.85, 6,421.74 and 2,638.92

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Solution

The fourth proportional to 4,285.85, 6,421.74 and 2,638.92 is: 3,954.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.85 : 6,421.74 = 2,638.92 : x
  2. Step 2: Convert to fraction form
    4,285.85/6,421.74 = 2,638.92/x
  3. Step 3: Cross multiply
    4,285.85x = 6,421.74 × 2,638.92
  4. Step 4: Simplify right side
    4,285.85x = 16,946,458.12
  5. Step 5: Solve for x
    x = 16,946,458.12/4,285.85
  6. Step 6: Final answer
    x = 3,954.05

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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.