Home / 8,984.19-12,399.81-5,209.77

Finding the Fourth Proportional to 8,984.19, 12,399.81 and 5,209.77

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Solution

The fourth proportional to 8,984.19, 12,399.81 and 5,209.77 is: 7,190.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.19 : 12,399.81 = 5,209.77 : x
  2. Step 2: Convert to fraction form
    8,984.19/12,399.81 = 5,209.77/x
  3. Step 3: Cross multiply
    8,984.19x = 12,399.81 × 5,209.77
  4. Step 4: Simplify right side
    8,984.19x = 64,600,158.14
  5. Step 5: Solve for x
    x = 64,600,158.14/8,984.19
  6. Step 6: Final answer
    x = 7,190.43

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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.