Home / 8,628.14-12,939.02-3,080

Finding the Fourth Proportional to 8,628.14, 12,939.02 and 3,080

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Solution

The fourth proportional to 8,628.14, 12,939.02 and 3,080 is: 4,618.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.14 : 12,939.02 = 3,080 : x
  2. Step 2: Convert to fraction form
    8,628.14/12,939.02 = 3,080/x
  3. Step 3: Cross multiply
    8,628.14x = 12,939.02 × 3,080
  4. Step 4: Simplify right side
    8,628.14x = 39,852,181.60
  5. Step 5: Solve for x
    x = 39,852,181.60/8,628.14
  6. Step 6: Final answer
    x = 4,618.86

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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.