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Finding the Fourth Proportional to 8,984.68, 12,399.12 and 5,208.46

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Solution

The fourth proportional to 8,984.68, 12,399.12 and 5,208.46 is: 7,187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.68 : 12,399.12 = 5,208.46 : x
  2. Step 2: Convert to fraction form
    8,984.68/12,399.12 = 5,208.46/x
  3. Step 3: Cross multiply
    8,984.68x = 12,399.12 × 5,208.46
  4. Step 4: Simplify right side
    8,984.68x = 64,580,320.56
  5. Step 5: Solve for x
    x = 64,580,320.56/8,984.68
  6. Step 6: Final answer
    x = 7,187.83

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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.