Home / 8,431.15-12,636.87-6,344.47

Finding the Fourth Proportional to 8,431.15, 12,636.87 and 6,344.47

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Solution

The fourth proportional to 8,431.15, 12,636.87 and 6,344.47 is: 9,509.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.15 : 12,636.87 = 6,344.47 : x
  2. Step 2: Convert to fraction form
    8,431.15/12,636.87 = 6,344.47/x
  3. Step 3: Cross multiply
    8,431.15x = 12,636.87 × 6,344.47
  4. Step 4: Simplify right side
    8,431.15x = 80,174,242.61
  5. Step 5: Solve for x
    x = 80,174,242.61/8,431.15
  6. Step 6: Final answer
    x = 9,509.29

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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.