Home / 4,285.35-6,420.99-2,638.43

Finding the Fourth Proportional to 4,285.35, 6,420.99 and 2,638.43

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Solution

The fourth proportional to 4,285.35, 6,420.99 and 2,638.43 is: 3,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.35 : 6,420.99 = 2,638.43 : x
  2. Step 2: Convert to fraction form
    4,285.35/6,420.99 = 2,638.43/x
  3. Step 3: Cross multiply
    4,285.35x = 6,420.99 × 2,638.43
  4. Step 4: Simplify right side
    4,285.35x = 16,941,300.54
  5. Step 5: Solve for x
    x = 16,941,300.54/4,285.35
  6. Step 6: Final answer
    x = 3,953.31

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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.