Home / 8,688.65-13,022.88-3,998.81

Finding the Fourth Proportional to 8,688.65, 13,022.88 and 3,998.81

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Solution

The fourth proportional to 8,688.65, 13,022.88 and 3,998.81 is: 5,993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.65 : 13,022.88 = 3,998.81 : x
  2. Step 2: Convert to fraction form
    8,688.65/13,022.88 = 3,998.81/x
  3. Step 3: Cross multiply
    8,688.65x = 13,022.88 × 3,998.81
  4. Step 4: Simplify right side
    8,688.65x = 52,075,957.66
  5. Step 5: Solve for x
    x = 52,075,957.66/8,688.65
  6. Step 6: Final answer
    x = 5,993.56

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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.