Home / 4,989.70-6,885.66-2,865.61

Finding the Fourth Proportional to 4,989.70, 6,885.66 and 2,865.61

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Solution

The fourth proportional to 4,989.70, 6,885.66 and 2,865.61 is: 3,954.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.70 : 6,885.66 = 2,865.61 : x
  2. Step 2: Convert to fraction form
    4,989.70/6,885.66 = 2,865.61/x
  3. Step 3: Cross multiply
    4,989.70x = 6,885.66 × 2,865.61
  4. Step 4: Simplify right side
    4,989.70x = 19,731,616.15
  5. Step 5: Solve for x
    x = 19,731,616.15/4,989.70
  6. Step 6: Final answer
    x = 3,954.47

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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.