Home / 1,608.18-2,412.64-512.46

Finding the Fourth Proportional to 1,608.18, 2,412.64 and 512.46

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Solution

The fourth proportional to 1,608.18, 2,412.64 and 512.46 is: 768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.18 : 2,412.64 = 512.46 : x
  2. Step 2: Convert to fraction form
    1,608.18/2,412.64 = 512.46/x
  3. Step 3: Cross multiply
    1,608.18x = 2,412.64 × 512.46
  4. Step 4: Simplify right side
    1,608.18x = 1,236,381.49
  5. Step 5: Solve for x
    x = 1,236,381.49/1,608.18
  6. Step 6: Final answer
    x = 768.81

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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.