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Finding the Fourth Proportional to 8,599.95, 12,900.20 and 3,053.21

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Solution

The fourth proportional to 8,599.95, 12,900.20 and 3,053.21 is: 4,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.95 : 12,900.20 = 3,053.21 : x
  2. Step 2: Convert to fraction form
    8,599.95/12,900.20 = 3,053.21/x
  3. Step 3: Cross multiply
    8,599.95x = 12,900.20 × 3,053.21
  4. Step 4: Simplify right side
    8,599.95x = 39,386,939.87
  5. Step 5: Solve for x
    x = 39,386,939.87/8,599.95
  6. Step 6: Final answer
    x = 4,579.90

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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.