Home / 6,689.36-9,234.80-6,247.64

Finding the Fourth Proportional to 6,689.36, 9,234.80 and 6,247.64

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Solution

The fourth proportional to 6,689.36, 9,234.80 and 6,247.64 is: 8,624.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.36 : 9,234.80 = 6,247.64 : x
  2. Step 2: Convert to fraction form
    6,689.36/9,234.80 = 6,247.64/x
  3. Step 3: Cross multiply
    6,689.36x = 9,234.80 × 6,247.64
  4. Step 4: Simplify right side
    6,689.36x = 57,695,628.46
  5. Step 5: Solve for x
    x = 57,695,628.46/6,689.36
  6. Step 6: Final answer
    x = 8,624.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.