Home / 8,286.51-12,426.12-4,390.02

Finding the Fourth Proportional to 8,286.51, 12,426.12 and 4,390.02

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Solution

The fourth proportional to 8,286.51, 12,426.12 and 4,390.02 is: 6,583.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.51 : 12,426.12 = 4,390.02 : x
  2. Step 2: Convert to fraction form
    8,286.51/12,426.12 = 4,390.02/x
  3. Step 3: Cross multiply
    8,286.51x = 12,426.12 × 4,390.02
  4. Step 4: Simplify right side
    8,286.51x = 54,550,915.32
  5. Step 5: Solve for x
    x = 54,550,915.32/8,286.51
  6. Step 6: Final answer
    x = 6,583.10

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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.