Home / 7,890.16-11,818.24-3,723.88

Finding the Fourth Proportional to 7,890.16, 11,818.24 and 3,723.88

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Solution

The fourth proportional to 7,890.16, 11,818.24 and 3,723.88 is: 5,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.16 : 11,818.24 = 3,723.88 : x
  2. Step 2: Convert to fraction form
    7,890.16/11,818.24 = 3,723.88/x
  3. Step 3: Cross multiply
    7,890.16x = 11,818.24 × 3,723.88
  4. Step 4: Simplify right side
    7,890.16x = 44,009,707.57
  5. Step 5: Solve for x
    x = 44,009,707.57/7,890.16
  6. Step 6: Final answer
    x = 5,577.80

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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.