Home / 1,276.31-1,914.19-410.42

Finding the Fourth Proportional to 1,276.31, 1,914.19 and 410.42

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Solution

The fourth proportional to 1,276.31, 1,914.19 and 410.42 is: 615.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.31 : 1,914.19 = 410.42 : x
  2. Step 2: Convert to fraction form
    1,276.31/1,914.19 = 410.42/x
  3. Step 3: Cross multiply
    1,276.31x = 1,914.19 × 410.42
  4. Step 4: Simplify right side
    1,276.31x = 785,621.86
  5. Step 5: Solve for x
    x = 785,621.86/1,276.31
  6. Step 6: Final answer
    x = 615.54

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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.