Home / 6,468.40-9,688.20-3,386.80

Finding the Fourth Proportional to 6,468.40, 9,688.20 and 3,386.80

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Solution

The fourth proportional to 6,468.40, 9,688.20 and 3,386.80 is: 5,072.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,468.40 : 9,688.20 = 3,386.80 : x
  2. Step 2: Convert to fraction form
    6,468.40/9,688.20 = 3,386.80/x
  3. Step 3: Cross multiply
    6,468.40x = 9,688.20 × 3,386.80
  4. Step 4: Simplify right side
    6,468.40x = 32,811,995.76
  5. Step 5: Solve for x
    x = 32,811,995.76/6,468.40
  6. Step 6: Final answer
    x = 5,072.66

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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.