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Finding the Fourth Proportional to 8,991.30, 13,483.53 and 2,749.38

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Solution

The fourth proportional to 8,991.30, 13,483.53 and 2,749.38 is: 4,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.30 : 13,483.53 = 2,749.38 : x
  2. Step 2: Convert to fraction form
    8,991.30/13,483.53 = 2,749.38/x
  3. Step 3: Cross multiply
    8,991.30x = 13,483.53 × 2,749.38
  4. Step 4: Simplify right side
    8,991.30x = 37,071,347.71
  5. Step 5: Solve for x
    x = 37,071,347.71/8,991.30
  6. Step 6: Final answer
    x = 4,123.02

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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.