Home / 3,178.29-4,767.93-986.58

Finding the Fourth Proportional to 3,178.29, 4,767.93 and 986.58

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Solution

The fourth proportional to 3,178.29, 4,767.93 and 986.58 is: 1,480.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.29 : 4,767.93 = 986.58 : x
  2. Step 2: Convert to fraction form
    3,178.29/4,767.93 = 986.58/x
  3. Step 3: Cross multiply
    3,178.29x = 4,767.93 × 986.58
  4. Step 4: Simplify right side
    3,178.29x = 4,703,944.38
  5. Step 5: Solve for x
    x = 4,703,944.38/3,178.29
  6. Step 6: Final answer
    x = 1,480.02

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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.