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Finding the Fourth Proportional to 2,946.97, 4,420.47 and 755.71

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Solution

The fourth proportional to 2,946.97, 4,420.47 and 755.71 is: 1,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,946.97 : 4,420.47 = 755.71 : x
  2. Step 2: Convert to fraction form
    2,946.97/4,420.47 = 755.71/x
  3. Step 3: Cross multiply
    2,946.97x = 4,420.47 × 755.71
  4. Step 4: Simplify right side
    2,946.97x = 3,340,593.38
  5. Step 5: Solve for x
    x = 3,340,593.38/2,946.97
  6. Step 6: Final answer
    x = 1,133.57

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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.