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Finding the Fourth Proportional to 5,387.30, 7,437.93 and 4,855.94

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Solution

The fourth proportional to 5,387.30, 7,437.93 and 4,855.94 is: 6,704.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.30 : 7,437.93 = 4,855.94 : x
  2. Step 2: Convert to fraction form
    5,387.30/7,437.93 = 4,855.94/x
  3. Step 3: Cross multiply
    5,387.30x = 7,437.93 × 4,855.94
  4. Step 4: Simplify right side
    5,387.30x = 36,118,141.80
  5. Step 5: Solve for x
    x = 36,118,141.80/5,387.30
  6. Step 6: Final answer
    x = 6,704.31

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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.