Home / 8,687.45-11,988.69-4,708.55

Finding the Fourth Proportional to 8,687.45, 11,988.69 and 4,708.55

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Solution

The fourth proportional to 8,687.45, 11,988.69 and 4,708.55 is: 6,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.45 : 11,988.69 = 4,708.55 : x
  2. Step 2: Convert to fraction form
    8,687.45/11,988.69 = 4,708.55/x
  3. Step 3: Cross multiply
    8,687.45x = 11,988.69 × 4,708.55
  4. Step 4: Simplify right side
    8,687.45x = 56,449,346.30
  5. Step 5: Solve for x
    x = 56,449,346.30/8,687.45
  6. Step 6: Final answer
    x = 6,497.80

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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.