Home / 6,321.18-9,478.85-3,689.45

Finding the Fourth Proportional to 6,321.18, 9,478.85 and 3,689.45

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Solution

The fourth proportional to 6,321.18, 9,478.85 and 3,689.45 is: 5,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321.18 : 9,478.85 = 3,689.45 : x
  2. Step 2: Convert to fraction form
    6,321.18/9,478.85 = 3,689.45/x
  3. Step 3: Cross multiply
    6,321.18x = 9,478.85 × 3,689.45
  4. Step 4: Simplify right side
    6,321.18x = 34,971,743.13
  5. Step 5: Solve for x
    x = 34,971,743.13/6,321.18
  6. Step 6: Final answer
    x = 5,532.47

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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.