Home / 4,120.72-5,684.16-3,000.16

Finding the Fourth Proportional to 4,120.72, 5,684.16 and 3,000.16

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Solution

The fourth proportional to 4,120.72, 5,684.16 and 3,000.16 is: 4,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.72 : 5,684.16 = 3,000.16 : x
  2. Step 2: Convert to fraction form
    4,120.72/5,684.16 = 3,000.16/x
  3. Step 3: Cross multiply
    4,120.72x = 5,684.16 × 3,000.16
  4. Step 4: Simplify right side
    4,120.72x = 17,053,389.47
  5. Step 5: Solve for x
    x = 17,053,389.47/4,120.72
  6. Step 6: Final answer
    x = 4,138.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.