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Finding the Fourth Proportional to 7,871.04, 11,800.78 and 3,708.70

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Solution

The fourth proportional to 7,871.04, 11,800.78 and 3,708.70 is: 5,560.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.04 : 11,800.78 = 3,708.70 : x
  2. Step 2: Convert to fraction form
    7,871.04/11,800.78 = 3,708.70/x
  3. Step 3: Cross multiply
    7,871.04x = 11,800.78 × 3,708.70
  4. Step 4: Simplify right side
    7,871.04x = 43,765,552.79
  5. Step 5: Solve for x
    x = 43,765,552.79/7,871.04
  6. Step 6: Final answer
    x = 5,560.33

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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.