Home / 8,428.43-11,631.36-4,651.77

Finding the Fourth Proportional to 8,428.43, 11,631.36 and 4,651.77

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Solution

The fourth proportional to 8,428.43, 11,631.36 and 4,651.77 is: 6,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.43 : 11,631.36 = 4,651.77 : x
  2. Step 2: Convert to fraction form
    8,428.43/11,631.36 = 4,651.77/x
  3. Step 3: Cross multiply
    8,428.43x = 11,631.36 × 4,651.77
  4. Step 4: Simplify right side
    8,428.43x = 54,106,411.51
  5. Step 5: Solve for x
    x = 54,106,411.51/8,428.43
  6. Step 6: Final answer
    x = 6,419.51

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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.