Home / 8,685.32-11,985.78-4,706.43

Finding the Fourth Proportional to 8,685.32, 11,985.78 and 4,706.43

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Solution

The fourth proportional to 8,685.32, 11,985.78 and 4,706.43 is: 6,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.32 : 11,985.78 = 4,706.43 : x
  2. Step 2: Convert to fraction form
    8,685.32/11,985.78 = 4,706.43/x
  3. Step 3: Cross multiply
    8,685.32x = 11,985.78 × 4,706.43
  4. Step 4: Simplify right side
    8,685.32x = 56,410,234.57
  5. Step 5: Solve for x
    x = 56,410,234.57/8,685.32
  6. Step 6: Final answer
    x = 6,494.89

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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.