Home / 9,178.20-12,664.35-5,400.63

Finding the Fourth Proportional to 9,178.20, 12,664.35 and 5,400.63

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Solution

The fourth proportional to 9,178.20, 12,664.35 and 5,400.63 is: 7,451.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.20 : 12,664.35 = 5,400.63 : x
  2. Step 2: Convert to fraction form
    9,178.20/12,664.35 = 5,400.63/x
  3. Step 3: Cross multiply
    9,178.20x = 12,664.35 × 5,400.63
  4. Step 4: Simplify right side
    9,178.20x = 68,395,468.54
  5. Step 5: Solve for x
    x = 68,395,468.54/9,178.20
  6. Step 6: Final answer
    x = 7,451.95

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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.