Home / 6,216.40-8,578.32-3,421.84

Finding the Fourth Proportional to 6,216.40, 8,578.32 and 3,421.84

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Solution

The fourth proportional to 6,216.40, 8,578.32 and 3,421.84 is: 4,721.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,216.40 : 8,578.32 = 3,421.84 : x
  2. Step 2: Convert to fraction form
    6,216.40/8,578.32 = 3,421.84/x
  3. Step 3: Cross multiply
    6,216.40x = 8,578.32 × 3,421.84
  4. Step 4: Simplify right side
    6,216.40x = 29,353,638.51
  5. Step 5: Solve for x
    x = 29,353,638.51/6,216.40
  6. Step 6: Final answer
    x = 4,721.97

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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.