Home / 3,422.16-4,722.48-1,909.98

Finding the Fourth Proportional to 3,422.16, 4,722.48 and 1,909.98

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Solution

The fourth proportional to 3,422.16, 4,722.48 and 1,909.98 is: 2,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.16 : 4,722.48 = 1,909.98 : x
  2. Step 2: Convert to fraction form
    3,422.16/4,722.48 = 1,909.98/x
  3. Step 3: Cross multiply
    3,422.16x = 4,722.48 × 1,909.98
  4. Step 4: Simplify right side
    3,422.16x = 9,019,842.35
  5. Step 5: Solve for x
    x = 9,019,842.35/3,422.16
  6. Step 6: Final answer
    x = 2,635.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.