Home / 8,619.37-12,935.49-6,403.32

Finding the Fourth Proportional to 8,619.37, 12,935.49 and 6,403.32

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Solution

The fourth proportional to 8,619.37, 12,935.49 and 6,403.32 is: 9,609.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.37 : 12,935.49 = 6,403.32 : x
  2. Step 2: Convert to fraction form
    8,619.37/12,935.49 = 6,403.32/x
  3. Step 3: Cross multiply
    8,619.37x = 12,935.49 × 6,403.32
  4. Step 4: Simplify right side
    8,619.37x = 82,830,049.81
  5. Step 5: Solve for x
    x = 82,830,049.81/8,619.37
  6. Step 6: Final answer
    x = 9,609.76

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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.