Home / 2,122.39-2,930.14-1,415.26

Finding the Fourth Proportional to 2,122.39, 2,930.14 and 1,415.26

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Solution

The fourth proportional to 2,122.39, 2,930.14 and 1,415.26 is: 1,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.39 : 2,930.14 = 1,415.26 : x
  2. Step 2: Convert to fraction form
    2,122.39/2,930.14 = 1,415.26/x
  3. Step 3: Cross multiply
    2,122.39x = 2,930.14 × 1,415.26
  4. Step 4: Simplify right side
    2,122.39x = 4,146,909.94
  5. Step 5: Solve for x
    x = 4,146,909.94/2,122.39
  6. Step 6: Final answer
    x = 1,953.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.