Home / 5,815.13-8,022.31-3,875.28

Finding the Fourth Proportional to 5,815.13, 8,022.31 and 3,875.28

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Solution

The fourth proportional to 5,815.13, 8,022.31 and 3,875.28 is: 5,346.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.13 : 8,022.31 = 3,875.28 : x
  2. Step 2: Convert to fraction form
    5,815.13/8,022.31 = 3,875.28/x
  3. Step 3: Cross multiply
    5,815.13x = 8,022.31 × 3,875.28
  4. Step 4: Simplify right side
    5,815.13x = 31,088,678.12
  5. Step 5: Solve for x
    x = 31,088,678.12/5,815.13
  6. Step 6: Final answer
    x = 5,346.17

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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.