Home / 1,425.20-2,137.80-603.26

Finding the Fourth Proportional to 1,425.20, 2,137.80 and 603.26

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Solution

The fourth proportional to 1,425.20, 2,137.80 and 603.26 is: 904.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.20 : 2,137.80 = 603.26 : x
  2. Step 2: Convert to fraction form
    1,425.20/2,137.80 = 603.26/x
  3. Step 3: Cross multiply
    1,425.20x = 2,137.80 × 603.26
  4. Step 4: Simplify right side
    1,425.20x = 1,289,649.23
  5. Step 5: Solve for x
    x = 1,289,649.23/1,425.20
  6. Step 6: Final answer
    x = 904.89

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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.