Home / 6,386.85-9,578.43-2,688.39

Finding the Fourth Proportional to 6,386.85, 9,578.43 and 2,688.39

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Solution

The fourth proportional to 6,386.85, 9,578.43 and 2,688.39 is: 4,031.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.85 : 9,578.43 = 2,688.39 : x
  2. Step 2: Convert to fraction form
    6,386.85/9,578.43 = 2,688.39/x
  3. Step 3: Cross multiply
    6,386.85x = 9,578.43 × 2,688.39
  4. Step 4: Simplify right side
    6,386.85x = 25,750,555.43
  5. Step 5: Solve for x
    x = 25,750,555.43/6,386.85
  6. Step 6: Final answer
    x = 4,031.81

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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.