Home / 1,425.23-2,138.22-603.53

Finding the Fourth Proportional to 1,425.23, 2,138.22 and 603.53

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Solution

The fourth proportional to 1,425.23, 2,138.22 and 603.53 is: 905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.23 : 2,138.22 = 603.53 : x
  2. Step 2: Convert to fraction form
    1,425.23/2,138.22 = 603.53/x
  3. Step 3: Cross multiply
    1,425.23x = 2,138.22 × 603.53
  4. Step 4: Simplify right side
    1,425.23x = 1,290,476.90
  5. Step 5: Solve for x
    x = 1,290,476.90/1,425.23
  6. Step 6: Final answer
    x = 905.45

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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.