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Finding the Fourth Proportional to 8,482.81, 12,719.86 and 4,482.34

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Solution

The fourth proportional to 8,482.81, 12,719.86 and 4,482.34 is: 6,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.81 : 12,719.86 = 4,482.34 : x
  2. Step 2: Convert to fraction form
    8,482.81/12,719.86 = 4,482.34/x
  3. Step 3: Cross multiply
    8,482.81x = 12,719.86 × 4,482.34
  4. Step 4: Simplify right side
    8,482.81x = 57,014,673.67
  5. Step 5: Solve for x
    x = 57,014,673.67/8,482.81
  6. Step 6: Final answer
    x = 6,721.21

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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.