Home / 7,980.39-11,963.16-3,818.34

Finding the Fourth Proportional to 7,980.39, 11,963.16 and 3,818.34

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Solution

The fourth proportional to 7,980.39, 11,963.16 and 3,818.34 is: 5,723.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.39 : 11,963.16 = 3,818.34 : x
  2. Step 2: Convert to fraction form
    7,980.39/11,963.16 = 3,818.34/x
  3. Step 3: Cross multiply
    7,980.39x = 11,963.16 × 3,818.34
  4. Step 4: Simplify right side
    7,980.39x = 45,679,412.35
  5. Step 5: Solve for x
    x = 45,679,412.35/7,980.39
  6. Step 6: Final answer
    x = 5,723.96

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1.5x scale

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.