Home / 8,815.65-12,165.85-5,039.43

Finding the Fourth Proportional to 8,815.65, 12,165.85 and 5,039.43

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Solution

The fourth proportional to 8,815.65, 12,165.85 and 5,039.43 is: 6,954.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.65 : 12,165.85 = 5,039.43 : x
  2. Step 2: Convert to fraction form
    8,815.65/12,165.85 = 5,039.43/x
  3. Step 3: Cross multiply
    8,815.65x = 12,165.85 × 5,039.43
  4. Step 4: Simplify right side
    8,815.65x = 61,308,955.76
  5. Step 5: Solve for x
    x = 61,308,955.76/8,815.65
  6. Step 6: Final answer
    x = 6,954.56

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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.