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Finding the Fourth Proportional to 5,509.56, 7,602.96 and 2,991.57

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Solution

The fourth proportional to 5,509.56, 7,602.96 and 2,991.57 is: 4,128.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.56 : 7,602.96 = 2,991.57 : x
  2. Step 2: Convert to fraction form
    5,509.56/7,602.96 = 2,991.57/x
  3. Step 3: Cross multiply
    5,509.56x = 7,602.96 × 2,991.57
  4. Step 4: Simplify right side
    5,509.56x = 22,744,787.05
  5. Step 5: Solve for x
    x = 22,744,787.05/5,509.56
  6. Step 6: Final answer
    x = 4,128.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.