Home / 2,913.75-4,020.99-1,587.45

Finding the Fourth Proportional to 2,913.75, 4,020.99 and 1,587.45

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Solution

The fourth proportional to 2,913.75, 4,020.99 and 1,587.45 is: 2,190.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.75 : 4,020.99 = 1,587.45 : x
  2. Step 2: Convert to fraction form
    2,913.75/4,020.99 = 1,587.45/x
  3. Step 3: Cross multiply
    2,913.75x = 4,020.99 × 1,587.45
  4. Step 4: Simplify right side
    2,913.75x = 6,383,120.58
  5. Step 5: Solve for x
    x = 6,383,120.58/2,913.75
  6. Step 6: Final answer
    x = 2,190.69

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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.