Home / 7,815.07-11,722.30-3,133.68

Finding the Fourth Proportional to 7,815.07, 11,722.30 and 3,133.68

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Solution

The fourth proportional to 7,815.07, 11,722.30 and 3,133.68 is: 4,700.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.07 : 11,722.30 = 3,133.68 : x
  2. Step 2: Convert to fraction form
    7,815.07/11,722.30 = 3,133.68/x
  3. Step 3: Cross multiply
    7,815.07x = 11,722.30 × 3,133.68
  4. Step 4: Simplify right side
    7,815.07x = 36,733,937.06
  5. Step 5: Solve for x
    x = 36,733,937.06/7,815.07
  6. Step 6: Final answer
    x = 4,700.40

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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.