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Finding the Fourth Proportional to 3,571.50, 5,357.32 and 974.51

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Solution

The fourth proportional to 3,571.50, 5,357.32 and 974.51 is: 1,461.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.50 : 5,357.32 = 974.51 : x
  2. Step 2: Convert to fraction form
    3,571.50/5,357.32 = 974.51/x
  3. Step 3: Cross multiply
    3,571.50x = 5,357.32 × 974.51
  4. Step 4: Simplify right side
    3,571.50x = 5,220,761.91
  5. Step 5: Solve for x
    x = 5,220,761.91/3,571.50
  6. Step 6: Final answer
    x = 1,461.78

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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.