Home / 5,390.79-8,084.58-2,103.09

Finding the Fourth Proportional to 5,390.79, 8,084.58 and 2,103.09

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Solution

The fourth proportional to 5,390.79, 8,084.58 and 2,103.09 is: 3,154.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.79 : 8,084.58 = 2,103.09 : x
  2. Step 2: Convert to fraction form
    5,390.79/8,084.58 = 2,103.09/x
  3. Step 3: Cross multiply
    5,390.79x = 8,084.58 × 2,103.09
  4. Step 4: Simplify right side
    5,390.79x = 17,002,599.35
  5. Step 5: Solve for x
    x = 17,002,599.35/5,390.79
  6. Step 6: Final answer
    x = 3,154.01

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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.