Home / 1,460.13-2,190.33-420.12

Finding the Fourth Proportional to 1,460.13, 2,190.33 and 420.12

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Solution

The fourth proportional to 1,460.13, 2,190.33 and 420.12 is: 630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.13 : 2,190.33 = 420.12 : x
  2. Step 2: Convert to fraction form
    1,460.13/2,190.33 = 420.12/x
  3. Step 3: Cross multiply
    1,460.13x = 2,190.33 × 420.12
  4. Step 4: Simplify right side
    1,460.13x = 920,201.44
  5. Step 5: Solve for x
    x = 920,201.44/1,460.13
  6. Step 6: Final answer
    x = 630.22

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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.