Home / 4,989.85-6,886.46-2,865.66

Finding the Fourth Proportional to 4,989.85, 6,886.46 and 2,865.66

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Solution

The fourth proportional to 4,989.85, 6,886.46 and 2,865.66 is: 3,954.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.85 : 6,886.46 = 2,865.66 : x
  2. Step 2: Convert to fraction form
    4,989.85/6,886.46 = 2,865.66/x
  3. Step 3: Cross multiply
    4,989.85x = 6,886.46 × 2,865.66
  4. Step 4: Simplify right side
    4,989.85x = 19,734,238.64
  5. Step 5: Solve for x
    x = 19,734,238.64/4,989.85
  6. Step 6: Final answer
    x = 3,954.88

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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.