Home / 8,436.48-12,634.99-6,669.61

Finding the Fourth Proportional to 8,436.48, 12,634.99 and 6,669.61

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Solution

The fourth proportional to 8,436.48, 12,634.99 and 6,669.61 is: 9,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.48 : 12,634.99 = 6,669.61 : x
  2. Step 2: Convert to fraction form
    8,436.48/12,634.99 = 6,669.61/x
  3. Step 3: Cross multiply
    8,436.48x = 12,634.99 × 6,669.61
  4. Step 4: Simplify right side
    8,436.48x = 84,270,479.78
  5. Step 5: Solve for x
    x = 84,270,479.78/8,436.48
  6. Step 6: Final answer
    x = 9,988.82

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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.