Home / 6,216.15-8,578.28-3,421.65

Finding the Fourth Proportional to 6,216.15, 8,578.28 and 3,421.65

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Solution

The fourth proportional to 6,216.15, 8,578.28 and 3,421.65 is: 4,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,216.15 : 8,578.28 = 3,421.65 : x
  2. Step 2: Convert to fraction form
    6,216.15/8,578.28 = 3,421.65/x
  3. Step 3: Cross multiply
    6,216.15x = 8,578.28 × 3,421.65
  4. Step 4: Simplify right side
    6,216.15x = 29,351,871.76
  5. Step 5: Solve for x
    x = 29,351,871.76/6,216.15
  6. Step 6: Final answer
    x = 4,721.87

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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.