Home / 8,687.31-11,988.48-4,708.42

Finding the Fourth Proportional to 8,687.31, 11,988.48 and 4,708.42

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Solution

The fourth proportional to 8,687.31, 11,988.48 and 4,708.42 is: 6,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.31 : 11,988.48 = 4,708.42 : x
  2. Step 2: Convert to fraction form
    8,687.31/11,988.48 = 4,708.42/x
  3. Step 3: Cross multiply
    8,687.31x = 11,988.48 × 4,708.42
  4. Step 4: Simplify right side
    8,687.31x = 56,446,751.37
  5. Step 5: Solve for x
    x = 56,446,751.37/8,687.31
  6. Step 6: Final answer
    x = 6,497.61

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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.