Home / 3,856.04-5,321.36-2,087.66

Finding the Fourth Proportional to 3,856.04, 5,321.36 and 2,087.66

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Solution

The fourth proportional to 3,856.04, 5,321.36 and 2,087.66 is: 2,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.04 : 5,321.36 = 2,087.66 : x
  2. Step 2: Convert to fraction form
    3,856.04/5,321.36 = 2,087.66/x
  3. Step 3: Cross multiply
    3,856.04x = 5,321.36 × 2,087.66
  4. Step 4: Simplify right side
    3,856.04x = 11,109,190.42
  5. Step 5: Solve for x
    x = 11,109,190.42/3,856.04
  6. Step 6: Final answer
    x = 2,880.98

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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.