Home / 7,815.70-11,720.67-2,884.06

Finding the Fourth Proportional to 7,815.70, 11,720.67 and 2,884.06

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Solution

The fourth proportional to 7,815.70, 11,720.67 and 2,884.06 is: 4,325.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.70 : 11,720.67 = 2,884.06 : x
  2. Step 2: Convert to fraction form
    7,815.70/11,720.67 = 2,884.06/x
  3. Step 3: Cross multiply
    7,815.70x = 11,720.67 × 2,884.06
  4. Step 4: Simplify right side
    7,815.70x = 33,803,115.52
  5. Step 5: Solve for x
    x = 33,803,115.52/7,815.70
  6. Step 6: Final answer
    x = 4,325.03

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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.