Home / 2,782.42-3,839.74-1,587.36

Finding the Fourth Proportional to 2,782.42, 3,839.74 and 1,587.36

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Solution

The fourth proportional to 2,782.42, 3,839.74 and 1,587.36 is: 2,190.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.42 : 3,839.74 = 1,587.36 : x
  2. Step 2: Convert to fraction form
    2,782.42/3,839.74 = 1,587.36/x
  3. Step 3: Cross multiply
    2,782.42x = 3,839.74 × 1,587.36
  4. Step 4: Simplify right side
    2,782.42x = 6,095,060.12
  5. Step 5: Solve for x
    x = 6,095,060.12/2,782.42
  6. Step 6: Final answer
    x = 2,190.56

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1.5x scale

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.