Home / 1,420.61-2,126.97-1,072.89

Finding the Fourth Proportional to 1,420.61, 2,126.97 and 1,072.89

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Solution

The fourth proportional to 1,420.61, 2,126.97 and 1,072.89 is: 1,606.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.61 : 2,126.97 = 1,072.89 : x
  2. Step 2: Convert to fraction form
    1,420.61/2,126.97 = 1,072.89/x
  3. Step 3: Cross multiply
    1,420.61x = 2,126.97 × 1,072.89
  4. Step 4: Simplify right side
    1,420.61x = 2,282,004.84
  5. Step 5: Solve for x
    x = 2,282,004.84/1,420.61
  6. Step 6: Final answer
    x = 1,606.36

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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.