Home / 5,218.63-7,202.31-2,980.83

Finding the Fourth Proportional to 5,218.63, 7,202.31 and 2,980.83

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Solution

The fourth proportional to 5,218.63, 7,202.31 and 2,980.83 is: 4,113.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.63 : 7,202.31 = 2,980.83 : x
  2. Step 2: Convert to fraction form
    5,218.63/7,202.31 = 2,980.83/x
  3. Step 3: Cross multiply
    5,218.63x = 7,202.31 × 2,980.83
  4. Step 4: Simplify right side
    5,218.63x = 21,468,861.72
  5. Step 5: Solve for x
    x = 21,468,861.72/5,218.63
  6. Step 6: Final answer
    x = 4,113.89

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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.