Home / 8,436.41-12,655.77-3,171.21

Finding the Fourth Proportional to 8,436.41, 12,655.77 and 3,171.21

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Solution

The fourth proportional to 8,436.41, 12,655.77 and 3,171.21 is: 4,757.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.41 : 12,655.77 = 3,171.21 : x
  2. Step 2: Convert to fraction form
    8,436.41/12,655.77 = 3,171.21/x
  3. Step 3: Cross multiply
    8,436.41x = 12,655.77 × 3,171.21
  4. Step 4: Simplify right side
    8,436.41x = 40,134,041.10
  5. Step 5: Solve for x
    x = 40,134,041.10/8,436.41
  6. Step 6: Final answer
    x = 4,757.24

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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.