Home / 1,425.17-2,137.74-437.98

Finding the Fourth Proportional to 1,425.17, 2,137.74 and 437.98

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Solution

The fourth proportional to 1,425.17, 2,137.74 and 437.98 is: 656.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.17 : 2,137.74 = 437.98 : x
  2. Step 2: Convert to fraction form
    1,425.17/2,137.74 = 437.98/x
  3. Step 3: Cross multiply
    1,425.17x = 2,137.74 × 437.98
  4. Step 4: Simplify right side
    1,425.17x = 936,287.37
  5. Step 5: Solve for x
    x = 936,287.37/1,425.17
  6. Step 6: Final answer
    x = 656.97

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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.