Home / 8,688.14-11,985.36-5,329.88

Finding the Fourth Proportional to 8,688.14, 11,985.36 and 5,329.88

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Solution

The fourth proportional to 8,688.14, 11,985.36 and 5,329.88 is: 7,352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.14 : 11,985.36 = 5,329.88 : x
  2. Step 2: Convert to fraction form
    8,688.14/11,985.36 = 5,329.88/x
  3. Step 3: Cross multiply
    8,688.14x = 11,985.36 × 5,329.88
  4. Step 4: Simplify right side
    8,688.14x = 63,880,530.56
  5. Step 5: Solve for x
    x = 63,880,530.56/8,688.14
  6. Step 6: Final answer
    x = 7,352.61

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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.