Home / 8,628.24-12,913.20-5,343.60

Finding the Fourth Proportional to 8,628.24, 12,913.20 and 5,343.60

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Solution

The fourth proportional to 8,628.24, 12,913.20 and 5,343.60 is: 7,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.24 : 12,913.20 = 5,343.60 : x
  2. Step 2: Convert to fraction form
    8,628.24/12,913.20 = 5,343.60/x
  3. Step 3: Cross multiply
    8,628.24x = 12,913.20 × 5,343.60
  4. Step 4: Simplify right side
    8,628.24x = 69,002,975.52
  5. Step 5: Solve for x
    x = 69,002,975.52/8,628.24
  6. Step 6: Final answer
    x = 7,997.34

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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.