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Finding the Fourth Proportional to 6,356.69, 9,536.14 and 2,139.54

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Solution

The fourth proportional to 6,356.69, 9,536.14 and 2,139.54 is: 3,209.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,356.69 : 9,536.14 = 2,139.54 : x
  2. Step 2: Convert to fraction form
    6,356.69/9,536.14 = 2,139.54/x
  3. Step 3: Cross multiply
    6,356.69x = 9,536.14 × 2,139.54
  4. Step 4: Simplify right side
    6,356.69x = 20,402,969.52
  5. Step 5: Solve for x
    x = 20,402,969.52/6,356.69
  6. Step 6: Final answer
    x = 3,209.68

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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.