Home / 1,410.06-2,115.50-422.90

Finding the Fourth Proportional to 1,410.06, 2,115.50 and 422.90

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Solution

The fourth proportional to 1,410.06, 2,115.50 and 422.90 is: 634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.06 : 2,115.50 = 422.90 : x
  2. Step 2: Convert to fraction form
    1,410.06/2,115.50 = 422.90/x
  3. Step 3: Cross multiply
    1,410.06x = 2,115.50 × 422.90
  4. Step 4: Simplify right side
    1,410.06x = 894,644.95
  5. Step 5: Solve for x
    x = 894,644.95/1,410.06
  6. Step 6: Final answer
    x = 634.47

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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.