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Finding the Fourth Proportional to 4,984.18, 6,875.88 and 2,991.31

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Solution

The fourth proportional to 4,984.18, 6,875.88 and 2,991.31 is: 4,126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984.18 : 6,875.88 = 2,991.31 : x
  2. Step 2: Convert to fraction form
    4,984.18/6,875.88 = 2,991.31/x
  3. Step 3: Cross multiply
    4,984.18x = 6,875.88 × 2,991.31
  4. Step 4: Simplify right side
    4,984.18x = 20,567,888.60
  5. Step 5: Solve for x
    x = 20,567,888.60/4,984.18
  6. Step 6: Final answer
    x = 4,126.63

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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.