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Finding the Fourth Proportional to 8,487.45, 12,731.13 and 4,616.46

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Solution

The fourth proportional to 8,487.45, 12,731.13 and 4,616.46 is: 6,924.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.45 : 12,731.13 = 4,616.46 : x
  2. Step 2: Convert to fraction form
    8,487.45/12,731.13 = 4,616.46/x
  3. Step 3: Cross multiply
    8,487.45x = 12,731.13 × 4,616.46
  4. Step 4: Simplify right side
    8,487.45x = 58,772,752.40
  5. Step 5: Solve for x
    x = 58,772,752.40/8,487.45
  6. Step 6: Final answer
    x = 6,924.67

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1.5x scale

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.