Home / 7,812.20-11,715.30-2,813.24

Finding the Fourth Proportional to 7,812.20, 11,715.30 and 2,813.24

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Solution

The fourth proportional to 7,812.20, 11,715.30 and 2,813.24 is: 4,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.20 : 11,715.30 = 2,813.24 : x
  2. Step 2: Convert to fraction form
    7,812.20/11,715.30 = 2,813.24/x
  3. Step 3: Cross multiply
    7,812.20x = 11,715.30 × 2,813.24
  4. Step 4: Simplify right side
    7,812.20x = 32,957,892.00
  5. Step 5: Solve for x
    x = 32,957,892.00/7,812.20
  6. Step 6: Final answer
    x = 4,218.77

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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.