Home / 7,826.72-11,742-2,280.11

Finding the Fourth Proportional to 7,826.72, 11,742 and 2,280.11

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Solution

The fourth proportional to 7,826.72, 11,742 and 2,280.11 is: 3,420.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,826.72 : 11,742 = 2,280.11 : x
  2. Step 2: Convert to fraction form
    7,826.72/11,742 = 2,280.11/x
  3. Step 3: Cross multiply
    7,826.72x = 11,742 × 2,280.11
  4. Step 4: Simplify right side
    7,826.72x = 26,773,051.62
  5. Step 5: Solve for x
    x = 26,773,051.62/7,826.72
  6. Step 6: Final answer
    x = 3,420.72

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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.