Home / 8,128.16-12,192-2,934.08

Finding the Fourth Proportional to 8,128.16, 12,192 and 2,934.08

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Solution

The fourth proportional to 8,128.16, 12,192 and 2,934.08 is: 4,401.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.16 : 12,192 = 2,934.08 : x
  2. Step 2: Convert to fraction form
    8,128.16/12,192 = 2,934.08/x
  3. Step 3: Cross multiply
    8,128.16x = 12,192 × 2,934.08
  4. Step 4: Simplify right side
    8,128.16x = 35,772,303.36
  5. Step 5: Solve for x
    x = 35,772,303.36/8,128.16
  6. Step 6: Final answer
    x = 4,401.03

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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.