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Finding the Fourth Proportional to 3,148.97, 4,722.51 and 957.11

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Solution

The fourth proportional to 3,148.97, 4,722.51 and 957.11 is: 1,435.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.97 : 4,722.51 = 957.11 : x
  2. Step 2: Convert to fraction form
    3,148.97/4,722.51 = 957.11/x
  3. Step 3: Cross multiply
    3,148.97x = 4,722.51 × 957.11
  4. Step 4: Simplify right side
    3,148.97x = 4,519,961.55
  5. Step 5: Solve for x
    x = 4,519,961.55/3,148.97
  6. Step 6: Final answer
    x = 1,435.38

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1.5x scale

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.