Home / 4,639.97-6,955.09-2,172.78

Finding the Fourth Proportional to 4,639.97, 6,955.09 and 2,172.78

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Solution

The fourth proportional to 4,639.97, 6,955.09 and 2,172.78 is: 3,256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.97 : 6,955.09 = 2,172.78 : x
  2. Step 2: Convert to fraction form
    4,639.97/6,955.09 = 2,172.78/x
  3. Step 3: Cross multiply
    4,639.97x = 6,955.09 × 2,172.78
  4. Step 4: Simplify right side
    4,639.97x = 15,111,875.02
  5. Step 5: Solve for x
    x = 15,111,875.02/4,639.97
  6. Step 6: Final answer
    x = 3,256.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.