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Finding the Fourth Proportional to 8,443.80, 12,666.90 and 2,599.80

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Solution

The fourth proportional to 8,443.80, 12,666.90 and 2,599.80 is: 3,900.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,443.80 : 12,666.90 = 2,599.80 : x
  2. Step 2: Convert to fraction form
    8,443.80/12,666.90 = 2,599.80/x
  3. Step 3: Cross multiply
    8,443.80x = 12,666.90 × 2,599.80
  4. Step 4: Simplify right side
    8,443.80x = 32,931,406.62
  5. Step 5: Solve for x
    x = 32,931,406.62/8,443.80
  6. Step 6: Final answer
    x = 3,900.07

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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.