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Finding the Fourth Proportional to 7,509.91, 11,261.01 and 2,578.22

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Solution

The fourth proportional to 7,509.91, 11,261.01 and 2,578.22 is: 3,866.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,509.91 : 11,261.01 = 2,578.22 : x
  2. Step 2: Convert to fraction form
    7,509.91/11,261.01 = 2,578.22/x
  3. Step 3: Cross multiply
    7,509.91x = 11,261.01 × 2,578.22
  4. Step 4: Simplify right side
    7,509.91x = 29,033,361.20
  5. Step 5: Solve for x
    x = 29,033,361.20/7,509.91
  6. Step 6: Final answer
    x = 3,866.01

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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.