Home / 7,209.30-10,815.75-2,015.13

Finding the Fourth Proportional to 7,209.30, 10,815.75 and 2,015.13

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Solution

The fourth proportional to 7,209.30, 10,815.75 and 2,015.13 is: 3,023.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.30 : 10,815.75 = 2,015.13 : x
  2. Step 2: Convert to fraction form
    7,209.30/10,815.75 = 2,015.13/x
  3. Step 3: Cross multiply
    7,209.30x = 10,815.75 × 2,015.13
  4. Step 4: Simplify right side
    7,209.30x = 21,795,078.14
  5. Step 5: Solve for x
    x = 21,795,078.14/7,209.30
  6. Step 6: Final answer
    x = 3,023.19

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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.