Home / 4,105.20-5,665.36-2,312.80

Finding the Fourth Proportional to 4,105.20, 5,665.36 and 2,312.80

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Solution

The fourth proportional to 4,105.20, 5,665.36 and 2,312.80 is: 3,191.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,105.20 : 5,665.36 = 2,312.80 : x
  2. Step 2: Convert to fraction form
    4,105.20/5,665.36 = 2,312.80/x
  3. Step 3: Cross multiply
    4,105.20x = 5,665.36 × 2,312.80
  4. Step 4: Simplify right side
    4,105.20x = 13,102,844.61
  5. Step 5: Solve for x
    x = 13,102,844.61/4,105.20
  6. Step 6: Final answer
    x = 3,191.77

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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.