Home / 6,215.15-8,576.91-3,420.65

Finding the Fourth Proportional to 6,215.15, 8,576.91 and 3,420.65

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Solution

The fourth proportional to 6,215.15, 8,576.91 and 3,420.65 is: 4,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.15 : 8,576.91 = 3,420.65 : x
  2. Step 2: Convert to fraction form
    6,215.15/8,576.91 = 3,420.65/x
  3. Step 3: Cross multiply
    6,215.15x = 8,576.91 × 3,420.65
  4. Step 4: Simplify right side
    6,215.15x = 29,338,590.09
  5. Step 5: Solve for x
    x = 29,338,590.09/6,215.15
  6. Step 6: Final answer
    x = 4,720.50

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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.