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Finding the Fourth Proportional to 5,361.78, 8,005.98 and 4,802.88

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Solution

The fourth proportional to 5,361.78, 8,005.98 and 4,802.88 is: 7,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,361.78 : 8,005.98 = 4,802.88 : x
  2. Step 2: Convert to fraction form
    5,361.78/8,005.98 = 4,802.88/x
  3. Step 3: Cross multiply
    5,361.78x = 8,005.98 × 4,802.88
  4. Step 4: Simplify right side
    5,361.78x = 38,451,761.22
  5. Step 5: Solve for x
    x = 38,451,761.22/5,361.78
  6. Step 6: Final answer
    x = 7,171.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.