Home / 8,685.45-11,985.78-4,706.49

Finding the Fourth Proportional to 8,685.45, 11,985.78 and 4,706.49

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Solution

The fourth proportional to 8,685.45, 11,985.78 and 4,706.49 is: 6,494.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.45 : 11,985.78 = 4,706.49 : x
  2. Step 2: Convert to fraction form
    8,685.45/11,985.78 = 4,706.49/x
  3. Step 3: Cross multiply
    8,685.45x = 11,985.78 × 4,706.49
  4. Step 4: Simplify right side
    8,685.45x = 56,410,953.71
  5. Step 5: Solve for x
    x = 56,410,953.71/8,685.45
  6. Step 6: Final answer
    x = 6,494.88

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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.