Home / 1,276.35-1,914.45-410.59

Finding the Fourth Proportional to 1,276.35, 1,914.45 and 410.59

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Solution

The fourth proportional to 1,276.35, 1,914.45 and 410.59 is: 615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.35 : 1,914.45 = 410.59 : x
  2. Step 2: Convert to fraction form
    1,276.35/1,914.45 = 410.59/x
  3. Step 3: Cross multiply
    1,276.35x = 1,914.45 × 410.59
  4. Step 4: Simplify right side
    1,276.35x = 786,054.03
  5. Step 5: Solve for x
    x = 786,054.03/1,276.35
  6. Step 6: Final answer
    x = 615.86

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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.