Home / 6,639.63-9,162.45-3,985.47

Finding the Fourth Proportional to 6,639.63, 9,162.45 and 3,985.47

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Solution

The fourth proportional to 6,639.63, 9,162.45 and 3,985.47 is: 5,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.63 : 9,162.45 = 3,985.47 : x
  2. Step 2: Convert to fraction form
    6,639.63/9,162.45 = 3,985.47/x
  3. Step 3: Cross multiply
    6,639.63x = 9,162.45 × 3,985.47
  4. Step 4: Simplify right side
    6,639.63x = 36,516,669.60
  5. Step 5: Solve for x
    x = 36,516,669.60/6,639.63
  6. Step 6: Final answer
    x = 5,499.80

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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.