Home / 1,460.21-2,190.63-420.13

Finding the Fourth Proportional to 1,460.21, 2,190.63 and 420.13

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Solution

The fourth proportional to 1,460.21, 2,190.63 and 420.13 is: 630.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.21 : 2,190.63 = 420.13 : x
  2. Step 2: Convert to fraction form
    1,460.21/2,190.63 = 420.13/x
  3. Step 3: Cross multiply
    1,460.21x = 2,190.63 × 420.13
  4. Step 4: Simplify right side
    1,460.21x = 920,349.38
  5. Step 5: Solve for x
    x = 920,349.38/1,460.21
  6. Step 6: Final answer
    x = 630.29

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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.