Home / 8,384.97-12,579.48-3,120.15

Finding the Fourth Proportional to 8,384.97, 12,579.48 and 3,120.15

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Solution

The fourth proportional to 8,384.97, 12,579.48 and 3,120.15 is: 4,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,384.97 : 12,579.48 = 3,120.15 : x
  2. Step 2: Convert to fraction form
    8,384.97/12,579.48 = 3,120.15/x
  3. Step 3: Cross multiply
    8,384.97x = 12,579.48 × 3,120.15
  4. Step 4: Simplify right side
    8,384.97x = 39,249,864.52
  5. Step 5: Solve for x
    x = 39,249,864.52/8,384.97
  6. Step 6: Final answer
    x = 4,680.98

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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.