Home / 8,280.00-11,428.90-5,628.94

Finding the Fourth Proportional to 8,280.00, 11,428.90 and 5,628.94

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Solution

The fourth proportional to 8,280.00, 11,428.90 and 5,628.94 is: 7,769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.00 : 11,428.90 = 5,628.94 : x
  2. Step 2: Convert to fraction form
    8,280.00/11,428.90 = 5,628.94/x
  3. Step 3: Cross multiply
    8,280.00x = 11,428.90 × 5,628.94
  4. Step 4: Simplify right side
    8,280.00x = 64,332,614.01
  5. Step 5: Solve for x
    x = 64,332,614.01/8,280.00
  6. Step 6: Final answer
    x = 7,769.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.