Home / 2,913.39-4,020.36-1,587.09

Finding the Fourth Proportional to 2,913.39, 4,020.36 and 1,587.09

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Solution

The fourth proportional to 2,913.39, 4,020.36 and 1,587.09 is: 2,190.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.39 : 4,020.36 = 1,587.09 : x
  2. Step 2: Convert to fraction form
    2,913.39/4,020.36 = 1,587.09/x
  3. Step 3: Cross multiply
    2,913.39x = 4,020.36 × 1,587.09
  4. Step 4: Simplify right side
    2,913.39x = 6,380,673.15
  5. Step 5: Solve for x
    x = 6,380,673.15/2,913.39
  6. Step 6: Final answer
    x = 2,190.12

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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.