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Finding the Fourth Proportional to 6,308.61, 8,699.97 and 4,985.47

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Solution

The fourth proportional to 6,308.61, 8,699.97 and 4,985.47 is: 6,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,308.61 : 8,699.97 = 4,985.47 : x
  2. Step 2: Convert to fraction form
    6,308.61/8,699.97 = 4,985.47/x
  3. Step 3: Cross multiply
    6,308.61x = 8,699.97 × 4,985.47
  4. Step 4: Simplify right side
    6,308.61x = 43,373,439.44
  5. Step 5: Solve for x
    x = 43,373,439.44/6,308.61
  6. Step 6: Final answer
    x = 6,875.28

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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.