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Finding the Fourth Proportional to 8,981.56, 13,473.56 and 3,137.40

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Solution

The fourth proportional to 8,981.56, 13,473.56 and 3,137.40 is: 4,706.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.56 : 13,473.56 = 3,137.40 : x
  2. Step 2: Convert to fraction form
    8,981.56/13,473.56 = 3,137.40/x
  3. Step 3: Cross multiply
    8,981.56x = 13,473.56 × 3,137.40
  4. Step 4: Simplify right side
    8,981.56x = 42,271,947.14
  5. Step 5: Solve for x
    x = 42,271,947.14/8,981.56
  6. Step 6: Final answer
    x = 4,706.53

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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.