Home / 2,142.86-2,958.68-1,671.29

Finding the Fourth Proportional to 2,142.86, 2,958.68 and 1,671.29

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Solution

The fourth proportional to 2,142.86, 2,958.68 and 1,671.29 is: 2,307.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.86 : 2,958.68 = 1,671.29 : x
  2. Step 2: Convert to fraction form
    2,142.86/2,958.68 = 1,671.29/x
  3. Step 3: Cross multiply
    2,142.86x = 2,958.68 × 1,671.29
  4. Step 4: Simplify right side
    2,142.86x = 4,944,801.68
  5. Step 5: Solve for x
    x = 4,944,801.68/2,142.86
  6. Step 6: Final answer
    x = 2,307.57

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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.