Home / 5,419.90-8,130.30-2,133.10

Finding the Fourth Proportional to 5,419.90, 8,130.30 and 2,133.10

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Solution

The fourth proportional to 5,419.90, 8,130.30 and 2,133.10 is: 3,199.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.90 : 8,130.30 = 2,133.10 : x
  2. Step 2: Convert to fraction form
    5,419.90/8,130.30 = 2,133.10/x
  3. Step 3: Cross multiply
    5,419.90x = 8,130.30 × 2,133.10
  4. Step 4: Simplify right side
    5,419.90x = 17,342,742.93
  5. Step 5: Solve for x
    x = 17,342,742.93/5,419.90
  6. Step 6: Final answer
    x = 3,199.83

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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.