Home / 1,412.37-2,117.88-438.48

Finding the Fourth Proportional to 1,412.37, 2,117.88 and 438.48

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Solution

The fourth proportional to 1,412.37, 2,117.88 and 438.48 is: 657.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.37 : 2,117.88 = 438.48 : x
  2. Step 2: Convert to fraction form
    1,412.37/2,117.88 = 438.48/x
  3. Step 3: Cross multiply
    1,412.37x = 2,117.88 × 438.48
  4. Step 4: Simplify right side
    1,412.37x = 928,648.02
  5. Step 5: Solve for x
    x = 928,648.02/1,412.37
  6. Step 6: Final answer
    x = 657.51

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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.