Home / 8,384.96-12,579.47-3,120.17

Finding the Fourth Proportional to 8,384.96, 12,579.47 and 3,120.17

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Solution

The fourth proportional to 8,384.96, 12,579.47 and 3,120.17 is: 4,681.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,384.96 : 12,579.47 = 3,120.17 : x
  2. Step 2: Convert to fraction form
    8,384.96/12,579.47 = 3,120.17/x
  3. Step 3: Cross multiply
    8,384.96x = 12,579.47 × 3,120.17
  4. Step 4: Simplify right side
    8,384.96x = 39,250,006.41
  5. Step 5: Solve for x
    x = 39,250,006.41/8,384.96
  6. Step 6: Final answer
    x = 4,681.00

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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.