Home / 2,782.74-3,839.81-1,587.89

Finding the Fourth Proportional to 2,782.74, 3,839.81 and 1,587.89

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Solution

The fourth proportional to 2,782.74, 3,839.81 and 1,587.89 is: 2,191.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.74 : 3,839.81 = 1,587.89 : x
  2. Step 2: Convert to fraction form
    2,782.74/3,839.81 = 1,587.89/x
  3. Step 3: Cross multiply
    2,782.74x = 3,839.81 × 1,587.89
  4. Step 4: Simplify right side
    2,782.74x = 6,097,187.96
  5. Step 5: Solve for x
    x = 6,097,187.96/2,782.74
  6. Step 6: Final answer
    x = 2,191.07

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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.