Home / 8,979.99-13,468.38-3,138.27

Finding the Fourth Proportional to 8,979.99, 13,468.38 and 3,138.27

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Solution

The fourth proportional to 8,979.99, 13,468.38 and 3,138.27 is: 4,706.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.99 : 13,468.38 = 3,138.27 : x
  2. Step 2: Convert to fraction form
    8,979.99/13,468.38 = 3,138.27/x
  3. Step 3: Cross multiply
    8,979.99x = 13,468.38 × 3,138.27
  4. Step 4: Simplify right side
    8,979.99x = 42,267,412.90
  5. Step 5: Solve for x
    x = 42,267,412.90/8,979.99
  6. Step 6: Final answer
    x = 4,706.84

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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.