Home / 8,021.62-12,032.40-2,178.21

Finding the Fourth Proportional to 8,021.62, 12,032.40 and 2,178.21

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Solution

The fourth proportional to 8,021.62, 12,032.40 and 2,178.21 is: 3,267.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,021.62 : 12,032.40 = 2,178.21 : x
  2. Step 2: Convert to fraction form
    8,021.62/12,032.40 = 2,178.21/x
  3. Step 3: Cross multiply
    8,021.62x = 12,032.40 × 2,178.21
  4. Step 4: Simplify right side
    8,021.62x = 26,209,094.00
  5. Step 5: Solve for x
    x = 26,209,094.00/8,021.62
  6. Step 6: Final answer
    x = 3,267.31

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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.