Home / 1,486.04-2,229.11-390.51

Finding the Fourth Proportional to 1,486.04, 2,229.11 and 390.51

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Solution

The fourth proportional to 1,486.04, 2,229.11 and 390.51 is: 585.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.04 : 2,229.11 = 390.51 : x
  2. Step 2: Convert to fraction form
    1,486.04/2,229.11 = 390.51/x
  3. Step 3: Cross multiply
    1,486.04x = 2,229.11 × 390.51
  4. Step 4: Simplify right side
    1,486.04x = 870,489.26
  5. Step 5: Solve for x
    x = 870,489.26/1,486.04
  6. Step 6: Final answer
    x = 585.78

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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.