Home / 8,428.77-11,631.68-4,651.93

Finding the Fourth Proportional to 8,428.77, 11,631.68 and 4,651.93

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Solution

The fourth proportional to 8,428.77, 11,631.68 and 4,651.93 is: 6,419.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.77 : 11,631.68 = 4,651.93 : x
  2. Step 2: Convert to fraction form
    8,428.77/11,631.68 = 4,651.93/x
  3. Step 3: Cross multiply
    8,428.77x = 11,631.68 × 4,651.93
  4. Step 4: Simplify right side
    8,428.77x = 54,109,761.14
  5. Step 5: Solve for x
    x = 54,109,761.14/8,428.77
  6. Step 6: Final answer
    x = 6,419.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.