Home / 8,287.08-12,428.80-4,769.66

Finding the Fourth Proportional to 8,287.08, 12,428.80 and 4,769.66

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Solution

The fourth proportional to 8,287.08, 12,428.80 and 4,769.66 is: 7,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,287.08 : 12,428.80 = 4,769.66 : x
  2. Step 2: Convert to fraction form
    8,287.08/12,428.80 = 4,769.66/x
  3. Step 3: Cross multiply
    8,287.08x = 12,428.80 × 4,769.66
  4. Step 4: Simplify right side
    8,287.08x = 59,281,150.21
  5. Step 5: Solve for x
    x = 59,281,150.21/8,287.08
  6. Step 6: Final answer
    x = 7,153.44

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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.