Home / 5,420.04-8,128.66-2,133.15

Finding the Fourth Proportional to 5,420.04, 8,128.66 and 2,133.15

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Solution

The fourth proportional to 5,420.04, 8,128.66 and 2,133.15 is: 3,199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.04 : 8,128.66 = 2,133.15 : x
  2. Step 2: Convert to fraction form
    5,420.04/8,128.66 = 2,133.15/x
  3. Step 3: Cross multiply
    5,420.04x = 8,128.66 × 2,133.15
  4. Step 4: Simplify right side
    5,420.04x = 17,339,651.08
  5. Step 5: Solve for x
    x = 17,339,651.08/5,420.04
  6. Step 6: Final answer
    x = 3,199.17

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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.