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Finding the Fourth Proportional to 4,899.77, 7,349.62 and 1,978.03

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Solution

The fourth proportional to 4,899.77, 7,349.62 and 1,978.03 is: 2,967.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,899.77 : 7,349.62 = 1,978.03 : x
  2. Step 2: Convert to fraction form
    4,899.77/7,349.62 = 1,978.03/x
  3. Step 3: Cross multiply
    4,899.77x = 7,349.62 × 1,978.03
  4. Step 4: Simplify right side
    4,899.77x = 14,537,768.85
  5. Step 5: Solve for x
    x = 14,537,768.85/4,899.77
  6. Step 6: Final answer
    x = 2,967.03

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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.