Home / 1,458.08-2,187.44-432.16

Finding the Fourth Proportional to 1,458.08, 2,187.44 and 432.16

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Solution

The fourth proportional to 1,458.08, 2,187.44 and 432.16 is: 648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.08 : 2,187.44 = 432.16 : x
  2. Step 2: Convert to fraction form
    1,458.08/2,187.44 = 432.16/x
  3. Step 3: Cross multiply
    1,458.08x = 2,187.44 × 432.16
  4. Step 4: Simplify right side
    1,458.08x = 945,324.07
  5. Step 5: Solve for x
    x = 945,324.07/1,458.08
  6. Step 6: Final answer
    x = 648.33

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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.