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Finding the Fourth Proportional to 8,988.71, 13,483.53 and 2,749.67

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Solution

The fourth proportional to 8,988.71, 13,483.53 and 2,749.67 is: 4,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.71 : 13,483.53 = 2,749.67 : x
  2. Step 2: Convert to fraction form
    8,988.71/13,483.53 = 2,749.67/x
  3. Step 3: Cross multiply
    8,988.71x = 13,483.53 × 2,749.67
  4. Step 4: Simplify right side
    8,988.71x = 37,075,257.94
  5. Step 5: Solve for x
    x = 37,075,257.94/8,988.71
  6. Step 6: Final answer
    x = 4,124.65

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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.