Home / 7,288.12-10,911.30-5,447.80

Finding the Fourth Proportional to 7,288.12, 10,911.30 and 5,447.80

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Solution

The fourth proportional to 7,288.12, 10,911.30 and 5,447.80 is: 8,156.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,288.12 : 10,911.30 = 5,447.80 : x
  2. Step 2: Convert to fraction form
    7,288.12/10,911.30 = 5,447.80/x
  3. Step 3: Cross multiply
    7,288.12x = 10,911.30 × 5,447.80
  4. Step 4: Simplify right side
    7,288.12x = 59,442,580.14
  5. Step 5: Solve for x
    x = 59,442,580.14/7,288.12
  6. Step 6: Final answer
    x = 8,156.09

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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.