Home / 8,607.30-12,878.34-5,099.19

Finding the Fourth Proportional to 8,607.30, 12,878.34 and 5,099.19

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Solution

The fourth proportional to 8,607.30, 12,878.34 and 5,099.19 is: 7,629.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.30 : 12,878.34 = 5,099.19 : x
  2. Step 2: Convert to fraction form
    8,607.30/12,878.34 = 5,099.19/x
  3. Step 3: Cross multiply
    8,607.30x = 12,878.34 × 5,099.19
  4. Step 4: Simplify right side
    8,607.30x = 65,669,102.54
  5. Step 5: Solve for x
    x = 65,669,102.54/8,607.30
  6. Step 6: Final answer
    x = 7,629.47

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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.