Home / 7,719.85-11,581.70-3,562.76

Finding the Fourth Proportional to 7,719.85, 11,581.70 and 3,562.76

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Solution

The fourth proportional to 7,719.85, 11,581.70 and 3,562.76 is: 5,345.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.85 : 11,581.70 = 3,562.76 : x
  2. Step 2: Convert to fraction form
    7,719.85/11,581.70 = 3,562.76/x
  3. Step 3: Cross multiply
    7,719.85x = 11,581.70 × 3,562.76
  4. Step 4: Simplify right side
    7,719.85x = 41,262,741.77
  5. Step 5: Solve for x
    x = 41,262,741.77/7,719.85
  6. Step 6: Final answer
    x = 5,345.02

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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.