Home / 7,309.36-10,964.76-2,115.12

Finding the Fourth Proportional to 7,309.36, 10,964.76 and 2,115.12

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Solution

The fourth proportional to 7,309.36, 10,964.76 and 2,115.12 is: 3,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,309.36 : 10,964.76 = 2,115.12 : x
  2. Step 2: Convert to fraction form
    7,309.36/10,964.76 = 2,115.12/x
  3. Step 3: Cross multiply
    7,309.36x = 10,964.76 × 2,115.12
  4. Step 4: Simplify right side
    7,309.36x = 23,191,783.17
  5. Step 5: Solve for x
    x = 23,191,783.17/7,309.36
  6. Step 6: Final answer
    x = 3,172.89

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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.