Home / 5,178.24-7,145.52-2,939.36

Finding the Fourth Proportional to 5,178.24, 7,145.52 and 2,939.36

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Solution

The fourth proportional to 5,178.24, 7,145.52 and 2,939.36 is: 4,056.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.24 : 7,145.52 = 2,939.36 : x
  2. Step 2: Convert to fraction form
    5,178.24/7,145.52 = 2,939.36/x
  3. Step 3: Cross multiply
    5,178.24x = 7,145.52 × 2,939.36
  4. Step 4: Simplify right side
    5,178.24x = 21,003,255.67
  5. Step 5: Solve for x
    x = 21,003,255.67/5,178.24
  6. Step 6: Final answer
    x = 4,056.06

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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.