Home / 9,390.20-12,957.12-5,198.44

Finding the Fourth Proportional to 9,390.20, 12,957.12 and 5,198.44

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Solution

The fourth proportional to 9,390.20, 12,957.12 and 5,198.44 is: 7,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.20 : 12,957.12 = 5,198.44 : x
  2. Step 2: Convert to fraction form
    9,390.20/12,957.12 = 5,198.44/x
  3. Step 3: Cross multiply
    9,390.20x = 12,957.12 × 5,198.44
  4. Step 4: Simplify right side
    9,390.20x = 67,356,810.89
  5. Step 5: Solve for x
    x = 67,356,810.89/9,390.20
  6. Step 6: Final answer
    x = 7,173.10

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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.