Home / 7,779.41-11,671.43-3,621.87

Finding the Fourth Proportional to 7,779.41, 11,671.43 and 3,621.87

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Solution

The fourth proportional to 7,779.41, 11,671.43 and 3,621.87 is: 5,433.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.41 : 11,671.43 = 3,621.87 : x
  2. Step 2: Convert to fraction form
    7,779.41/11,671.43 = 3,621.87/x
  3. Step 3: Cross multiply
    7,779.41x = 11,671.43 × 3,621.87
  4. Step 4: Simplify right side
    7,779.41x = 42,272,384.06
  5. Step 5: Solve for x
    x = 42,272,384.06/7,779.41
  6. Step 6: Final answer
    x = 5,433.88

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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.