Home / 9,979.82-14,979.57-5,299.81

Finding the Fourth Proportional to 9,979.82, 14,979.57 and 5,299.81

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Solution

The fourth proportional to 9,979.82, 14,979.57 and 5,299.81 is: 7,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.82 : 14,979.57 = 5,299.81 : x
  2. Step 2: Convert to fraction form
    9,979.82/14,979.57 = 5,299.81/x
  3. Step 3: Cross multiply
    9,979.82x = 14,979.57 × 5,299.81
  4. Step 4: Simplify right side
    9,979.82x = 79,388,925.58
  5. Step 5: Solve for x
    x = 79,388,925.58/9,979.82
  6. Step 6: Final answer
    x = 7,954.95

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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.