Home / 1,614.35-2,421.45-518.69

Finding the Fourth Proportional to 1,614.35, 2,421.45 and 518.69

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Solution

The fourth proportional to 1,614.35, 2,421.45 and 518.69 is: 778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.35 : 2,421.45 = 518.69 : x
  2. Step 2: Convert to fraction form
    1,614.35/2,421.45 = 518.69/x
  3. Step 3: Cross multiply
    1,614.35x = 2,421.45 × 518.69
  4. Step 4: Simplify right side
    1,614.35x = 1,255,987.95
  5. Step 5: Solve for x
    x = 1,255,987.95/1,614.35
  6. Step 6: Final answer
    x = 778.01

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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.