Home / 2,782.35-3,839.87-1,587.53

Finding the Fourth Proportional to 2,782.35, 3,839.87 and 1,587.53

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Solution

The fourth proportional to 2,782.35, 3,839.87 and 1,587.53 is: 2,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.35 : 3,839.87 = 1,587.53 : x
  2. Step 2: Convert to fraction form
    2,782.35/3,839.87 = 1,587.53/x
  3. Step 3: Cross multiply
    2,782.35x = 3,839.87 × 1,587.53
  4. Step 4: Simplify right side
    2,782.35x = 6,095,922.39
  5. Step 5: Solve for x
    x = 6,095,922.39/2,782.35
  6. Step 6: Final answer
    x = 2,190.93

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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.