Home / 9,178.73-12,666.60-5,199.83

Finding the Fourth Proportional to 9,178.73, 12,666.60 and 5,199.83

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Solution

The fourth proportional to 9,178.73, 12,666.60 and 5,199.83 is: 7,175.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.73 : 12,666.60 = 5,199.83 : x
  2. Step 2: Convert to fraction form
    9,178.73/12,666.60 = 5,199.83/x
  3. Step 3: Cross multiply
    9,178.73x = 12,666.60 × 5,199.83
  4. Step 4: Simplify right side
    9,178.73x = 65,864,231.84
  5. Step 5: Solve for x
    x = 65,864,231.84/9,178.73
  6. Step 6: Final answer
    x = 7,175.75

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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.