Home / 7,312.48-10,969.44-2,119.12

Finding the Fourth Proportional to 7,312.48, 10,969.44 and 2,119.12

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Solution

The fourth proportional to 7,312.48, 10,969.44 and 2,119.12 is: 3,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,312.48 : 10,969.44 = 2,119.12 : x
  2. Step 2: Convert to fraction form
    7,312.48/10,969.44 = 2,119.12/x
  3. Step 3: Cross multiply
    7,312.48x = 10,969.44 × 2,119.12
  4. Step 4: Simplify right side
    7,312.48x = 23,245,559.69
  5. Step 5: Solve for x
    x = 23,245,559.69/7,312.48
  6. Step 6: Final answer
    x = 3,178.89

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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.