Home / 4,290.24-6,434.88-1,212

Finding the Fourth Proportional to 4,290.24, 6,434.88 and 1,212

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Solution

The fourth proportional to 4,290.24, 6,434.88 and 1,212 is: 1,817.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.24 : 6,434.88 = 1,212 : x
  2. Step 2: Convert to fraction form
    4,290.24/6,434.88 = 1,212/x
  3. Step 3: Cross multiply
    4,290.24x = 6,434.88 × 1,212
  4. Step 4: Simplify right side
    4,290.24x = 7,799,074.56
  5. Step 5: Solve for x
    x = 7,799,074.56/4,290.24
  6. Step 6: Final answer
    x = 1,817.86

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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.