Home / 2,981.50-4,472.25-1,157.50

Finding the Fourth Proportional to 2,981.50, 4,472.25 and 1,157.50

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Solution

The fourth proportional to 2,981.50, 4,472.25 and 1,157.50 is: 1,736.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.50 : 4,472.25 = 1,157.50 : x
  2. Step 2: Convert to fraction form
    2,981.50/4,472.25 = 1,157.50/x
  3. Step 3: Cross multiply
    2,981.50x = 4,472.25 × 1,157.50
  4. Step 4: Simplify right side
    2,981.50x = 5,176,629.38
  5. Step 5: Solve for x
    x = 5,176,629.38/2,981.50
  6. Step 6: Final answer
    x = 1,736.25

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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.