Home / 8,678.30-12,996.48-4,969.28

Finding the Fourth Proportional to 8,678.30, 12,996.48 and 4,969.28

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Solution

The fourth proportional to 8,678.30, 12,996.48 and 4,969.28 is: 7,441.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.30 : 12,996.48 = 4,969.28 : x
  2. Step 2: Convert to fraction form
    8,678.30/12,996.48 = 4,969.28/x
  3. Step 3: Cross multiply
    8,678.30x = 12,996.48 × 4,969.28
  4. Step 4: Simplify right side
    8,678.30x = 64,583,148.13
  5. Step 5: Solve for x
    x = 64,583,148.13/8,678.30
  6. Step 6: Final answer
    x = 7,441.91

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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.