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Finding the Fourth Proportional to 4,978.08, 7,480.79 and 4,653

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Solution

The fourth proportional to 4,978.08, 7,480.79 and 4,653 is: 6,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.08 : 7,480.79 = 4,653 : x
  2. Step 2: Convert to fraction form
    4,978.08/7,480.79 = 4,653/x
  3. Step 3: Cross multiply
    4,978.08x = 7,480.79 × 4,653
  4. Step 4: Simplify right side
    4,978.08x = 34,808,127.50
  5. Step 5: Solve for x
    x = 34,808,127.50/4,978.08
  6. Step 6: Final answer
    x = 6,992.28

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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.