Home / 2,913.97-4,021.33-1,587.70

Finding the Fourth Proportional to 2,913.97, 4,021.33 and 1,587.70

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Solution

The fourth proportional to 2,913.97, 4,021.33 and 1,587.70 is: 2,191.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.97 : 4,021.33 = 1,587.70 : x
  2. Step 2: Convert to fraction form
    2,913.97/4,021.33 = 1,587.70/x
  3. Step 3: Cross multiply
    2,913.97x = 4,021.33 × 1,587.70
  4. Step 4: Simplify right side
    2,913.97x = 6,384,645.53
  5. Step 5: Solve for x
    x = 6,384,645.53/2,913.97
  6. Step 6: Final answer
    x = 2,191.05

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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.