Home / 5,178.24-7,145.64-2,939.94

Finding the Fourth Proportional to 5,178.24, 7,145.64 and 2,939.94

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Solution

The fourth proportional to 5,178.24, 7,145.64 and 2,939.94 is: 4,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.24 : 7,145.64 = 2,939.94 : x
  2. Step 2: Convert to fraction form
    5,178.24/7,145.64 = 2,939.94/x
  3. Step 3: Cross multiply
    5,178.24x = 7,145.64 × 2,939.94
  4. Step 4: Simplify right side
    5,178.24x = 21,007,752.86
  5. Step 5: Solve for x
    x = 21,007,752.86/5,178.24
  6. Step 6: Final answer
    x = 4,056.93

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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.