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Finding the Fourth Proportional to 8,424.84, 12,550.78 and 8,045.76

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Solution

The fourth proportional to 8,424.84, 12,550.78 and 8,045.76 is: 11,986.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.84 : 12,550.78 = 8,045.76 : x
  2. Step 2: Convert to fraction form
    8,424.84/12,550.78 = 8,045.76/x
  3. Step 3: Cross multiply
    8,424.84x = 12,550.78 × 8,045.76
  4. Step 4: Simplify right side
    8,424.84x = 100,980,563.69
  5. Step 5: Solve for x
    x = 100,980,563.69/8,424.84
  6. Step 6: Final answer
    x = 11,986.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.