Home / 7,869.80-11,808.30-3,708.20

Finding the Fourth Proportional to 7,869.80, 11,808.30 and 3,708.20

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Solution

The fourth proportional to 7,869.80, 11,808.30 and 3,708.20 is: 5,564.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.80 : 11,808.30 = 3,708.20 : x
  2. Step 2: Convert to fraction form
    7,869.80/11,808.30 = 3,708.20/x
  3. Step 3: Cross multiply
    7,869.80x = 11,808.30 × 3,708.20
  4. Step 4: Simplify right side
    7,869.80x = 43,787,538.06
  5. Step 5: Solve for x
    x = 43,787,538.06/7,869.80
  6. Step 6: Final answer
    x = 5,564.00

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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.