Home / 8,647.29-12,972.63-3,099.15

Finding the Fourth Proportional to 8,647.29, 12,972.63 and 3,099.15

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Solution

The fourth proportional to 8,647.29, 12,972.63 and 3,099.15 is: 4,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.29 : 12,972.63 = 3,099.15 : x
  2. Step 2: Convert to fraction form
    8,647.29/12,972.63 = 3,099.15/x
  3. Step 3: Cross multiply
    8,647.29x = 12,972.63 × 3,099.15
  4. Step 4: Simplify right side
    8,647.29x = 40,204,126.26
  5. Step 5: Solve for x
    x = 40,204,126.26/8,647.29
  6. Step 6: Final answer
    x = 4,649.33

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1.5x scale

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.