Home / 5,178.39-7,147.89-3,053.85

Finding the Fourth Proportional to 5,178.39, 7,147.89 and 3,053.85

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Solution

The fourth proportional to 5,178.39, 7,147.89 and 3,053.85 is: 4,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.39 : 7,147.89 = 3,053.85 : x
  2. Step 2: Convert to fraction form
    5,178.39/7,147.89 = 3,053.85/x
  3. Step 3: Cross multiply
    5,178.39x = 7,147.89 × 3,053.85
  4. Step 4: Simplify right side
    5,178.39x = 21,828,583.88
  5. Step 5: Solve for x
    x = 21,828,583.88/5,178.39
  6. Step 6: Final answer
    x = 4,215.32

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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.