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Finding the Fourth Proportional to 8,612.84, 12,902.34 and 4,903.76

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Solution

The fourth proportional to 8,612.84, 12,902.34 and 4,903.76 is: 7,346.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.84 : 12,902.34 = 4,903.76 : x
  2. Step 2: Convert to fraction form
    8,612.84/12,902.34 = 4,903.76/x
  3. Step 3: Cross multiply
    8,612.84x = 12,902.34 × 4,903.76
  4. Step 4: Simplify right side
    8,612.84x = 63,269,978.80
  5. Step 5: Solve for x
    x = 63,269,978.80/8,612.84
  6. Step 6: Final answer
    x = 7,346.01

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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.